Trouble with keyboard

Hey people! I hope you are having good time I recently installed arch, but I have trouble with my keyboard during installation and post installation which is null character (^@) printed to stdout, if I pressed function or Esc key null character stop appearing until some command wait for input (e.g. passwd) or pacman updating repo which will mess up progress bar or install conformation

I managed to install arch by enabling ssh with shell redirection, since I can't use vim or nano. I thought post installation everything should go fine since I installed base, linux, linux-firmware and amd-ucode packages, but now I can't log in as a result of null character

I should also mention that my problem across many distros like mint and mint xfce4, parrot, fedora, arch and EndeavourOS

note:

• hot keys (sound, brightness control keys etc.) work fine on fedora, but not on EndeavourOS version (25/06/2024)
• Keyboard response time feel slow, and I can't repeat key press by holding the key (e.g. hold backspace to delete several characters)
• vim not working, it will switch from insert to normal mode
• nano will go to end of file by moving line by line
• Sometime in live arch iso systemctl log will interrupt and appear

additional note: I think Fn key is what causing the problem

the gist is output from fedora workstation 40.1 livecd I think it may help

edit: notes list format