I agree that manjaro is shit, but “your distro is shit” is not helpful advice for someone who wants to get their graphical session back.

You can also check /var/log/pacman.log for the packages you installed, then pacman -Ql the packages to list what files they might have changed

Classic, never fix anything, just change to <my preferred distro>, you wouldnt have experienced any problems, ever

Have you checked the log files under /var/log/xorg.0…log?

Also see https://wiki.archlinux.org/title/Xorg#Troubleshooting

If you want to get your graphical session back quickly, maybe try setting up GNOME with wayland (https://wiki.archlinux.org/title/GNOME#Wayland_sessions)

Discord being proprietary should be reason enough to try to replace it