What did you do before this mess started?
If it was due to an update or installation of one or more packages, before reinstalling you could try a least reinstalling the latest working snapshot:
This does not cover your configuration in the home directory. For them you should have backups.
There might be other things to try, like switching or booting to a tty and try to garuda-update or other stuff.
Maybe trying something could be a learning exercise, even when the situation is compromised.
Anyway, some of the error messages reported in your other topic are a bit concerning, like not being able to find (not install) a well-known nvidia package or dkms not installed…