OatPotato

If you still need help:

1. Open a TTY (Ctrl+Alt+F3 for example, works from F1 to F6 but depending on Wayland or Xorg F1, F2 and/or F6 may be used so F3 should be good, otherwise try another one).
2. The TTY will ask for your username and password, so login with your normal user (not root).
3. You shoud get to an interactive shell, so you can go to the Gnome extensions directory (cd ~/.local/share/gnome-shell/extensions/).
4. You can now remove the problematic extension (rm -r …).
5. Now either you reboot your computer (the reboot command will be enough to restart the computer), this will ensure you don't keep a remaining session and you'll boot in your login manager (GDM I guess).

Hope it helps!

Just in case: if you installed LibreWolf from Flatpak, it won't work. There is an opened issue for that in Flatpak (https://github.com/flatpak/xdg-desktop-portal/issues/655).

If you plan to buy a router, maybe the OpenWRT One, made by the OpenWRT project. I guess this is the best way to have a fully supported and working device.

After "[Insert current year] is the year of Linux desktop", I guess we'll have "2025 is the year of Linux mobile"

Everything remind me of them

In Debian? I guess this is after upgrade, as update just update the packages database.