Let’s try this:
sudo pacman -Rs kde-applications
checking dependencies...
error: failed to prepare transaction (could not satisfy dependencies)
:: removing signon-kwallet-extension breaks dependency 'signon-kwallet-extension' required by kaccounts-integration
:: removing kio-extras breaks dependency 'kio-extras' required by plasma-workspace
Moderator edit: In the future, please use proper formatting: [HowTo] Post command output and file content as formatted text
would it be easier to reinstall KDE?
OK. Is a complete reinstall an option for you?
may be the easiest way out. What command?
It’s not that easy. You’ll need to download the latest ISO and install from scratch. Which do you want, XFCE or KDE?
quite happy with XFCE. But please tell me all I have to do, don;t want to get into a bigger mess 
Well, to start with, you’ll probably want to save your personal files to a USB drive, as reinstalling will destroy everything. You can download the ISO here. Boot with it, and follow the installation instructions of the installer. That’s really all I can offer from this point forward.
Except, download the full ISO, not the Live one.
OK thanks. I’ll try to do this when I have time. Is it not possible to keep my ‘home’?
Is it on a separate partition?
yes, it is
In fact I think it is…with all other distros I had a special partition but I didn’t install this one
Then yes, you can (if its a separate partition). When installing Manjaro, use the manual partitioning method instead; format your / partition, and any others necessary, but don’t choose to format the /home partition. Just make sure to add the appropriate mountpoints as needed for all partitions (/boot/efi, /, /home, swap).
The mistake you originally made was probably trying to install Xfce on top of KDE, I’m guessing. Now you see the result of that. 
how can I find out if I have a separate partition?
sudo blkid
Look for a partition with only `/home’.
ok thanks. wish me luck. And thank you for your help. A pity there is no easier way out
lsblk
will probably be more readable.
Yes, but think of the experience you’ll gain (some consolation, at least)
lsblk -o name,mountpoint,size,uuid
copy that down somewhere for reference.
*emphasised text*
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 63.4M 1 loop /var/lib/snapd/snap/core20/1974
/var/lib/snapd/snap/core20/1974
loop1 7:1 0 4K 1 loop /var/lib/snapd/snap/bare/5
/var/lib/snapd/snap/bare/5
loop2 7:2 0 63.5M 1 loop /var/lib/snapd/snap/core20/2015
/var/lib/snapd/snap/core20/2015
loop3 7:3 0 73.9M 1 loop /var/lib/snapd/snap/core22/864
/var/lib/snapd/snap/core22/864
loop4 7:4 0 349.7M 1 loop /var/lib/snapd/snap/gnome-3-38-2004/140
/var/lib/snapd/snap/gnome-3-38-2004/140
loop5 7:5 0 349.7M 1 loop /var/lib/snapd/snap/gnome-3-38-2004/143
/var/lib/snapd/snap/gnome-3-38-2004/143
loop6 7:6 0 74.1M 1 loop /var/lib/snapd/snap/core22/1033
/var/lib/snapd/snap/core22/1033
loop7 7:7 0 496.9M 1 loop /var/lib/snapd/snap/gnome-42-2204/132
/var/lib/snapd/snap/gnome-42-2204/132
loop8 7:8 0 81.3M 1 loop /var/lib/snapd/snap/gtk-common-themes/1534
/var/lib/snapd/snap/gtk-common-themes/1534
loop9 7:9 0 497M 1 loop /var/lib/snapd/snap/gnome-42-2204/141
/var/lib/snapd/snap/gnome-42-2204/141
loop10 7:10 0 91.7M 1 loop /var/lib/snapd/snap/gtk-common-themes/1535
/var/lib/snapd/snap/gtk-common-themes/1535
loop11 7:11 0 112.2M 1 loop /var/lib/snapd/snap/mc-installer/618
/var/lib/snapd/snap/mc-installer/618
loop12 7:12 0 111.9M 1 loop /var/lib/snapd/snap/mc-installer/619
/var/lib/snapd/snap/mc-installer/619
loop13 7:13 0 40.8M 1 loop /var/lib/snapd/snap/snapd/20092
/var/lib/snapd/snap/snapd/20092
loop14 7:14 0 40.9M 1 loop /var/lib/snapd/snap/snapd/20290
/var/lib/snapd/snap/snapd/20290
nvme0n1 259:0 0 232.9G 0 disk
├─nvme0n1p1 259:1 0 300M 0 part /boot/efi
├─nvme0n1p2 259:2 0 223.8G 0 part /var/lib/snapd/snap
│ /
└─nvme0n1p3 259:3 0 8.8G 0 part [SWAP]I can do without that experience. Too old to learn now I started with red hat…long ago and am still lost
1 Like
It doesn’t seem like /home actually is on a separate partition;
nvme0n1 259:0 0 232.9G 0 disk
├─nvme0n1p1 259:1 0 300M 0 part /boot/efi
├─nvme0n1p2 259:2 0 223.8G 0 part /var/lib/snapd/snap
│ /
└─nvme0n1p3 259:3 0 8.8G 0 part [SWAP]