@neauoire If you still have that WiFi password and have some time to kill in the name of reliability, now might be a good time to set up full system snapshots and atomic upgrades. Failed Arch upgrades are an absolute nightmare to roll back from in my experience.
Since it's Arch there might even be an AUR package that sets it up for your.
Good starting point (haven't personally tested it though): https://wiki.archlinux.org/title/Snapper#Wrapping_pacman_transactions_in_snapshots
@csepp I have a USB stick that I use to flash back to when I miss things up. So far that has been pretty good. I have copies of all the tools I use, it's all uxn stuff, takes 500kb at most to bring back text editor, wiki, etc..