Cant connect wifi even if I connect it is too slow

I installed manjaro to my laptop today. It is lenovo ideapad gaming 3. At first I could connect the wifi without problem. Then suddenly it started to not connect and when it connects, internet is very slow. I can see the wifi networks from gui still. I tried to update kernel, but it did not solve my problem. From settings->hardware configuration I can see that manjaro cant detect my network device, it says unknown device name (Mediatek Corp.). How can I solve this?

This is my first linux experience.

inxi output:

System:
  Kernel: 6.2.8-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.1
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.2-x86_64
    root=UUID=4fc9aacf-f5c9-4c30-ab82-2db024214daf rw quiet splash
    udev.log_priority=3
  Desktop: KDE Plasma v: 5.27.3 tk: Qt v: 5.15.8 wm: kwin_x11 dm: SDDM
    Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Laptop System: LENOVO product: 82K2 v: IdeaPad Gaming 3 15ACH6
    serial: <filter> Chassis: type: 10 v: IdeaPad Gaming 3 15ACH6
    serial: <filter>
  Mobo: LENOVO model: LNVNB161216 v: No DPK serial: <filter> UEFI: LENOVO
    v: H3CN31WW(V2.01) date: 11/18/2021
Battery:
  ID-1: BAT1 charge: 15.4 Wh (35.6%) condition: 43.3/45.0 Wh (96.2%)
    volts: 11.2 min: 11.5 model: 0x53 0x4D 0x50 0x00 0x32 0x30 0 0x4C 0x32 0x30
    0x4D 0x33 0x50 0 type: Li-ion serial: <filter> status: discharging
    cycles: 22
Memory:
  RAM: total: 13.51 GiB used: 2.92 GiB (21.6%)
  Array-1: capacity: 64 GiB slots: 2 EC: None max-module-size: 32 GiB
    note: est.
  Device-1: DIMM 0 type: DDR4 detail: synchronous unbuffered (unregistered)
    size: 8 GiB speed: 3200 MT/s volts: curr: 1.2 min: 1.2 max: 1.2 width (bits):
    data: 64 total: 64 manufacturer: Samsung part-no: M471A1G44AB0-CWE
    serial: <filter>
  Device-2: DIMM 0 type: DDR4 detail: synchronous unbuffered (unregistered)
    size: 8 GiB speed: 3200 MT/s volts: curr: 1.2 min: 1.2 max: 1.2 width (bits):
    data: 64 total: 64 manufacturer: Samsung part-no: M471A1G44AB0-CWE
    serial: <filter>
CPU:
  Info: model: AMD Ryzen 7 5800H with Radeon Graphics socket: FP6 bits: 64
    type: MT MCP arch: Zen 3 gen: 4 level: v3 note: check built: 2021-22
    process: TSMC n7 (7nm) family: 0x19 (25) model-id: 0x50 (80) stepping: 0
    microcode: 0xA50000C
  Topology: cpus: 1x cores: 8 tpc: 2 threads: 16 smt: enabled cache:
    L1: 512 KiB desc: d-8x32 KiB; i-8x32 KiB L2: 4 MiB desc: 8x512 KiB L3: 16 MiB
    desc: 1x16 MiB
  Speed (MHz): avg: 1575 high: 3200 min/max: 1200/4462 boost: enabled
    base/boost: 3200/4450 scaling: driver: acpi-cpufreq governor: schedutil
    volts: 1.2 V ext-clock: 100 MHz cores: 1: 3200 2: 1200 3: 1200 4: 1200
    5: 1200 6: 1200 7: 1200 8: 1200 9: 1200 10: 1200 11: 3200 12: 3200 13: 1200
    14: 1200 15: 1200 16: 1200 bogomips: 102250
  Flags: 3dnowprefetch abm adx aes aperfmperf apic arat avic avx avx2 bmi1
    bmi2 bpext cat_l3 cdp_l3 clflush clflushopt clwb clzero cmov cmp_legacy
    constant_tsc cpb cppc cpuid cqm cqm_llc cqm_mbm_local cqm_mbm_total
    cqm_occup_llc cr8_legacy cx16 cx8 de decodeassists erms extapic
    extd_apicid f16c flushbyasid fma fpu fsgsbase fsrm fxsr fxsr_opt ht
    hw_pstate ibpb ibrs ibs invpcid irperf lahf_lm lbrv lm mba mca mce
    misalignsse mmx mmxext monitor movbe msr mtrr mwaitx nonstop_tsc nopl npt
    nrip_save nx ospke osvw overflow_recov pae pat pausefilter pclmulqdq
    pdpe1gb perfctr_core perfctr_llc perfctr_nb pfthreshold pge pku pni popcnt
    pse pse36 rapl rdpid rdpru rdrand rdseed rdt_a rdtscp rep_good sep sha_ni
    skinit smap smca smep ssbd sse sse2 sse4_1 sse4_2 sse4a ssse3 stibp succor
    svm svm_lock syscall tce topoext tsc tsc_scale umip v_spec_ctrl
    v_vmsave_vmload vaes vgif vmcb_clean vme vmmcall vpclmulqdq wbnoinvd wdt
    xgetbv1 xsave xsavec xsaveerptr xsaveopt xsaves
  Vulnerabilities:
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Not affected
  Type: retbleed status: Not affected
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: Retpolines, IBPB: conditional, IBRS_FW,
    STIBP: always-on, RSB filling, PBRSB-eIBRS: Not affected
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: NVIDIA TU117M [GeForce GTX 1650 Mobile / Max-Q] vendor: Lenovo
    driver: nvidia v: 530.41.03 alternate: nouveau,nvidia_drm non-free: 530.xx+
    status: current (as of 2023-03) arch: Turing code: TUxxx
    process: TSMC 12nm FF built: 2018-22 pcie: gen: 3 speed: 8 GT/s lanes: 8
    link-max: gen: 4 speed: 16 GT/s lanes: 16 bus-ID: 01:00.0
    chip-ID: 10de:1f9d class-ID: 0302
  Device-2: AMD Cezanne [Radeon Vega Series / Radeon Mobile Series]
    vendor: Lenovo driver: amdgpu v: kernel arch: GCN-5 code: Vega
    process: GF 14nm built: 2017-20 pcie: gen: 3 speed: 8 GT/s lanes: 16
    link-max: gen: 4 speed: 16 GT/s ports: active: eDP-1 empty: HDMI-A-1
    bus-ID: 05:00.0 chip-ID: 1002:1638 class-ID: 0300 temp: 44.0 C
  Device-3: IMC Networks Integrated Camera type: USB driver: uvcvideo
    bus-ID: 1-3:3 chip-ID: 13d3:56ff class-ID: 0e02
  Display: x11 server: X.Org v: 21.1.8 compositor: kwin_x11 driver: X:
    loaded: amdgpu,nvidia unloaded: modesetting,nouveau alternate: fbdev,nv,vesa
    dri: radeonsi gpu: amdgpu display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.00x11.22")
    s-diag: 582mm (22.93")
  Monitor-1: eDP-1 mapped: eDP model: BOE Display 0x0a81 built: 2021
    res: 1920x1080 hz: 120 dpi: 142 gamma: 1.2 size: 344x194mm (13.54x7.64")
    diag: 395mm (15.5") ratio: 16:9 modes: max: 1920x1080 min: 640x480
  API: OpenGL v: 4.6 Mesa 23.0.1 renderer: AMD Radeon Graphics (renoir LLVM
    15.0.7 DRM 3.49 6.2.8-1-MANJARO) direct-render: Yes
Audio:
  Device-1: AMD Renoir Radeon High Definition Audio vendor: Lenovo
    driver: snd_hda_intel v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 16
    link-max: gen: 4 speed: 16 GT/s bus-ID: 05:00.1 chip-ID: 1002:1637
    class-ID: 0403
  Device-2: AMD ACP/ACP3X/ACP6x Audio Coprocessor vendor: Lenovo driver: N/A
    alternate: snd_pci_acp3x, snd_rn_pci_acp3x, snd_pci_acp5x, snd_pci_acp6x,
    snd_acp_pci, snd_rpl_pci_acp6x, snd_pci_ps, snd_sof_amd_renoir,
    snd_sof_amd_rembrandt pcie: gen: 3 speed: 8 GT/s lanes: 16 link-max: gen: 4
    speed: 16 GT/s bus-ID: 05:00.5 chip-ID: 1022:15e2 class-ID: 0480
  Device-3: AMD Family 17h/19h HD Audio vendor: Lenovo driver: snd_hda_intel
    v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 16 link-max: gen: 4
    speed: 16 GT/s bus-ID: 05:00.6 chip-ID: 1022:15e3 class-ID: 0403
  API: ALSA v: k6.2.8-1-MANJARO status: kernel-api with: aoss
    type: oss-emulator tools: alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 0.3.67 status: off with: wireplumber status: off
    tools: pw-cli,wpctl
  Server-3: PulseAudio v: 16.1 status: active (root, process)
    tools: pacat,pactl
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Lenovo driver: r8168 v: 8.050.03-NAPI modules: r8169 pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 port: 2000 bus-ID: 02:00.0 chip-ID: 10ec:8168
    class-ID: 0200
  IF: enp2s0 state: up speed: 100 Mbps duplex: full mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  Device-2: MEDIATEK MT7921 802.11ax PCI Express Wireless Network Adapter
    vendor: Lenovo driver: mt7921e v: kernel modules: wl pcie: gen: 2
    speed: 5 GT/s lanes: 1 bus-ID: 03:00.0 chip-ID: 14c3:7961 class-ID: 0280
  IF: wlo1 state: down mac: <filter>
  WAN IP: <filter>
Bluetooth:
  Device-1: Foxconn / Hon Hai MediaTek Bluetooth Adapter type: USB
    driver: btusb v: 0.8 bus-ID: 1-4:4 chip-ID: 0489:e0cd class-ID: e001
    serial: <filter>
  Report: rfkill ID: hci0 rfk-id: 2 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 476.94 GiB used: 12.81 GiB (2.7%)
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Micron model: MTFDHBA512QFD
    size: 476.94 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
    lanes: 4 type: SSD serial: <filter> rev: 0011P6LN temp: 33.9 C scheme: GPT
  SMART: yes health: PASSED on: 22d 11h cycles: 227
    read-units: 4,136,332 [2.11 TB] written-units: 4,202,277 [2.15 TB]
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 476.64 GiB size: 468.09 GiB (98.21%) used: 12.81 GiB (2.7%)
    fs: ext4 block-size: 4096 B dev: /dev/nvme0n1p2 maj-min: 259:2 label: N/A
    uuid: 4fc9aacf-f5c9-4c30-ab82-2db024214daf
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 312 KiB (0.1%) fs: vfat block-size: 512 B dev: /dev/nvme0n1p1
    maj-min: 259:1 label: N/A uuid: 61C0-4CAD
Swap:
  Alert: No swap data was found.
Unmounted:
  Message: No unmounted partitions found.
USB:
  Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 4 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 1-2:2 info: ASUSTek TUF GAMING M5 type: Mouse,HID
    driver: hid-generic,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s power: 98mA
    chip-ID: 0b05:1898 class-ID: 0300
  Device-2: 1-3:3 info: IMC Networks Integrated Camera type: Video
    driver: uvcvideo interfaces: 2 rev: 2.0 speed: 480 Mb/s power: 500mA
    chip-ID: 13d3:56ff class-ID: 0e02
  Device-3: 1-4:4 info: Foxconn / Hon Hai MediaTek Bluetooth Adapter
    type: Bluetooth driver: btusb interfaces: 3 rev: 2.1 speed: 480 Mb/s
    power: 100mA chip-ID: 0489:e0cd class-ID: e001 serial: <filter>
  Hub-2: 2-0:1 info: Hi-speed hub with single TT ports: 4 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 2-3:2 info: Integrated Express ITE Device(8176) type: Keyboard
    driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 12 Mb/s power: 100mA
    chip-ID: 048d:c966 class-ID: 0301
  Device-2: 2-4:3 info: Integrated Express ITE Device(8295)
    type: Keyboard,HID driver: hid-generic,usbhid interfaces: 2 rev: 2.0
    speed: 12 Mb/s power: 100mA chip-ID: 048d:c963 class-ID: 0300
  Hub-3: 3-0:1 info: Super-speed hub ports: 2 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
  Hub-4: 4-0:1 info: Super-speed hub ports: 2 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
  System Temperatures: cpu: 52.0 C mobo: N/A gpu: amdgpu temp: 46.0 C
  Fan Speeds (RPM): N/A
Info:
  Processes: 302 Uptime: 1h 1m wakeups: 1 Init: systemd v: 252
  default: graphical tool: systemctl Compilers: gcc: 12.2.1 clang: 15.0.7
  Packages: pm: pacman pkgs: 1069 libs: 317 tools: pamac Shell: Zsh (sudo)
  v: 5.9 default: Bash v: 5.1.16 running-in: konsole inxi: 3.3.26

I added the inxi output

this solved my issue: