Regarding my external hdd, it is connected to USB hub, and I suspect it is not having good enough connection.
Here are the commands you asked for.
~ >>> lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 56,3M 1 loop /var/lib/snapd/snap/bitwarden/27
loop1 7:1 0 55,3M 1 loop /var/lib/snapd/snap/core18/1885
loop2 7:2 0 67,2M 1 loop /var/lib/snapd/snap/bunqdesktop/58
loop3 7:3 0 161,4M 1 loop /var/lib/snapd/snap/gnome-3-28-1804/128
loop4 7:4 0 114,2M 1 loop /var/lib/snapd/snap/signal-desktop/326
loop5 7:5 0 62,1M 1 loop /var/lib/snapd/snap/gtk-common-themes/1506
loop6 7:6 0 143,7M 1 loop /var/lib/snapd/snap/joplin-james-carroll/18
loop7 7:7 0 55M 1 loop /var/lib/snapd/snap/core18/1880
loop8 7:8 0 56,3M 1 loop /var/lib/snapd/snap/bitwarden/28
loop9 7:9 0 114,3M 1 loop /var/lib/snapd/snap/signal-desktop/327
loop10 7:10 0 144,7M 1 loop /var/lib/snapd/snap/joplin-james-carroll/21
loop11 7:11 0 29,9M 1 loop /var/lib/snapd/snap/snapd/8542
loop12 7:12 0 29,9M 1 loop /var/lib/snapd/snap/snapd/8790
sda 8:0 0 931,5G 0 disk
└─sda1 8:1 0 931,5G 0 part /run/media/olividir/1.0 TB Hard Disk
sdb 8:16 0 465,7G 0 disk
nvme0n1 259:0 0 238,5G 0 disk
├─nvme0n1p1
│ 259:1 0 300M 0 part /boot/efi
└─nvme0n1p2
259:2 0 238,2G 0 part /
~ >>> mount
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
sys on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
dev on /dev type devtmpfs (rw,nosuid,relatime,size=8131956k,nr_inodes=2032989,mode=755)
run on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755)
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)
/dev/nvme0n1p2 on / type ext4 (rw,noatime)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,size=4096k,nr_inodes=1024,mode=755)
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
none on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
cgroup on /sys/fs/cgroup/rdma type cgroup (rw,nosuid,nodev,noexec,relatime,rdma)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=29,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=13501)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
tracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,size=8141780k,nr_inodes=409600)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nosuid,nodev,noexec,relatime)
configfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime)
/dev/nvme0n1p1 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)
/var/lib/snapd/snaps/bitwarden_27.snap on /var/lib/snapd/snap/bitwarden/27 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core18_1885.snap on /var/lib/snapd/snap/core18/1885 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-28-1804_128.snap on /var/lib/snapd/snap/gnome-3-28-1804/128 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/bunqdesktop_58.snap on /var/lib/snapd/snap/bunqdesktop/58 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/signal-desktop_326.snap on /var/lib/snapd/snap/signal-desktop/326 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/joplin-james-carroll_18.snap on /var/lib/snapd/snap/joplin-james-carroll/18 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core18_1880.snap on /var/lib/snapd/snap/core18/1880 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gtk-common-themes_1506.snap on /var/lib/snapd/snap/gtk-common-themes/1506 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/bitwarden_28.snap on /var/lib/snapd/snap/bitwarden/28 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/signal-desktop_327.snap on /var/lib/snapd/snap/signal-desktop/327 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/joplin-james-carroll_21.snap on /var/lib/snapd/snap/joplin-james-carroll/21 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/snapd_8542.snap on /var/lib/snapd/snap/snapd/8542 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/snapd_8790.snap on /var/lib/snapd/snap/snapd/8790 type squashfs (ro,nodev,relatime,x-gdu.hide)
tmpfs on /run/user/120 type tmpfs (rw,nosuid,nodev,relatime,size=1628352k,nr_inodes=407088,mode=700,uid=120,gid=120)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=1628352k,nr_inodes=407088,mode=700,uid=1000,gid=1000)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
fusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)
/dev/sda1 on /run/media/olividir/1.0 TB Hard Disk type ext4 (rw,nosuid,nodev,relatime,uhelper=udisks2)
portal on /run/user/1000/doc type fuse.portal (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
run on /run/snapd/ns type tmpfs (rw,nosuid,nodev,relatime,mode=755)
nsfs on /run/snapd/ns/joplin-james-carroll.mnt type nsfs (rw)
~ >>> journalctl -b | grep -i mount
sep 03 06:55:29 HP kernel: Mount-cache hash table entries: 32768 (order: 6, 262144 bytes, linear)
sep 03 06:55:29 HP kernel: Mountpoint-cache hash table entries: 32768 (order: 6, 262144 bytes, linear)
sep 03 06:55:29 HP kernel: EXT4-fs (nvme0n1p2): mounted filesystem with ordered data mode. Opts: (null)
sep 03 06:55:29 HP systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
sep 03 06:55:29 HP systemd[1]: Mounting Huge Pages File System...
sep 03 06:55:29 HP systemd[1]: Mounting POSIX Message Queue File System...
sep 03 06:55:29 HP systemd[1]: Mounting Kernel Debug File System...
sep 03 06:55:29 HP systemd[1]: Mounting Kernel Trace File System...
sep 03 06:55:29 HP systemd[1]: tmp.mount: Directory /tmp to mount over is not empty, mounting anyway.
sep 03 06:55:29 HP systemd[1]: Mounting Temporary Directory (/tmp)...
sep 03 06:55:29 HP systemd[1]: Starting Remount Root and Kernel File Systems...
sep 03 06:55:29 HP systemd[1]: Mounted Huge Pages File System.
sep 03 06:55:29 HP systemd[1]: Mounted POSIX Message Queue File System.
sep 03 06:55:29 HP systemd[1]: Mounted Kernel Debug File System.
sep 03 06:55:29 HP systemd[1]: Mounted Kernel Trace File System.
sep 03 06:55:29 HP systemd[1]: Mounted Temporary Directory (/tmp).
sep 03 06:55:29 HP systemd[1]: proc-sys-fs-binfmt_misc.automount: Got automount request for /proc/sys/fs/binfmt_misc, triggered by 270 (systemd-binfmt)
sep 03 06:55:29 HP systemd[1]: Mounting Arbitrary Executable File Formats File System...
sep 03 06:55:29 HP kernel: EXT4-fs (nvme0n1p2): re-mounted. Opts: (null)
sep 03 06:55:29 HP systemd[1]: Mounted Arbitrary Executable File Formats File System.
sep 03 06:55:29 HP systemd[1]: Finished Remount Root and Kernel File Systems.
sep 03 06:55:29 HP systemd[1]: Mounting Kernel Configuration File System...
sep 03 06:55:29 HP systemd[1]: Mounted Kernel Configuration File System.
sep 03 06:55:30 HP kernel: audit: type=1400 audit(1599116129.962:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=384 comm="apparmor_parser"
sep 03 06:55:30 HP kernel: audit: type=1400 audit(1599116129.979:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/var/lib/snapd/snap/snapd/8790/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=409 comm="apparmor_parser"
sep 03 06:55:29 HP audit[384]: AVC apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=384 comm="apparmor_parser"
sep 03 06:55:29 HP audit[409]: AVC apparmor="STATUS" operation="profile_load" profile="unconfined" name="/var/lib/snapd/snap/snapd/8790/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=409 comm="apparmor_parser"
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for bitwarden, revision 27...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for bitwarden, revision 28...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for bunqdesktop, revision 58...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for core18, revision 1880...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for core18, revision 1885...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for gnome-3-28-1804, revision 128...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for gtk-common-themes, revision 1506...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for joplin-james-carroll, revision 18...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for joplin-james-carroll, revision 21...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for signal-desktop, revision 326...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for signal-desktop, revision 327...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for snapd, revision 8542...
sep 03 06:55:30 HP systemd[1]: Mounting Mount unit for snapd, revision 8790...
sep 03 06:55:30 HP systemd[1]: Mounting /boot/efi...
sep 03 06:55:30 HP systemd[1]: Mounted /boot/efi.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for bitwarden, revision 27.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for gnome-3-28-1804, revision 128.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for core18, revision 1885.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for bunqdesktop, revision 58.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for signal-desktop, revision 326.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for core18, revision 1880.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for gtk-common-themes, revision 1506.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for joplin-james-carroll, revision 18.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for bitwarden, revision 28.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for signal-desktop, revision 327.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for joplin-james-carroll, revision 21.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for snapd, revision 8542.
sep 03 06:55:30 HP systemd[1]: Mounted Mount unit for snapd, revision 8790.
sep 03 06:55:32 HP systemd[1]: tmp-sanity\x2dmountpoint\x2d062393297.mount: Succeeded.
sep 03 06:55:34 HP systemd[1]: Mounting /run/media/olividir/500 GB Games...
sep 03 06:55:34 HP kernel: EXT4-fs (sdb1): mounted filesystem with ordered data mode. Opts: (null)
sep 03 06:55:34 HP systemd[1]: Mounted /run/media/olividir/500 GB Games.
sep 03 06:55:45 HP systemd[1]: Mounting FUSE Control File System...
sep 03 06:55:45 HP systemd[1]: Mounted FUSE Control File System.
sep 03 06:59:03 HP systemd[1]: Unmounting /run/media/olividir/500 GB Games...
sep 03 06:59:03 HP systemd[1470]: run-media-olividir-500\x20GB\x20Games.mount: Succeeded.
sep 03 06:59:03 HP systemd[4317]: run-media-olividir-500\x20GB\x20Games.mount: Succeeded.
sep 03 06:59:03 HP systemd[1]: run-media-olividir-500\x20GB\x20Games.mount: Succeeded.
sep 03 06:59:03 HP systemd[1]: Unmounted /run/media/olividir/500 GB Games.
sep 03 07:21:09 HP kernel: EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
sep 03 07:21:09 HP udisksd[4925]: Mounted /dev/sda1 at /run/media/olividir/1.0 TB Hard Disk on behalf of uid 1000
sep 03 07:21:10 HP udisksd[4925]: udisks_state_check_mounted_fs_entry: block device /dev/sda1 is busy, skipping cleanup
sep 03 07:55:00 HP kernel: EXT4-fs (sdb1): mounted filesystem with ordered data mode. Opts: (null)
sep 03 07:55:00 HP udisksd[4925]: Mounted /dev/sdb1 (system) at /run/media/olividir/500 GB Games on behalf of uid 1000
sep 03 07:55:00 HP gnome-shell[4672]: Unable to guess content types on added mount 500 GB Games: Gio.IOErrorEnum: mount doesn’t implement content type guessing
sep 03 08:02:05 HP udisksd[4925]: Cleaning up mount point /run/media/olividir/500 GB Games (device 8:17 no longer exists)
sep 03 08:02:05 HP systemd[1]: Unmounting /run/media/olividir/500 GB Games...
sep 03 08:02:05 HP systemd[4317]: run-media-olividir-500\x20GB\x20Games.mount: Succeeded.
sep 03 08:02:05 HP systemd[1470]: run-media-olividir-500\x20GB\x20Games.mount: Succeeded.
sep 03 08:02:05 HP udisksd[4925]: Error cleaning up mount point /run/media/olividir/500 GB Games: Error unmounting: Command-line `umount -l '/run/media/olividir/500 GB Games'' exited with non-zero exit status 32: umount: /run/media/olividir/500 GB Games: not mounted.
sep 03 08:02:05 HP udisksd[4925]: Cleaning up mount point /run/media/olividir/500 GB Games (device 8:17 no longer exists)
sep 03 08:02:05 HP systemd[1]: run-media-olividir-500\x20GB\x20Games.mount: Succeeded.
sep 03 08:02:05 HP systemd[1]: Unmounted /run/media/olividir/500 GB Games.
sep 03 08:46:34 HP systemd[1]: tmp-snap.rootfs_QLWNwC.mount: Succeeded.
sep 03 08:46:34 HP systemd[1470]: tmp-snap.rootfs_QLWNwC.mount: Succeeded.
sep 03 08:46:34 HP systemd[4317]: tmp-snap.rootfs_QLWNwC.mount: Succeeded.