It's fixed!! Thank you so much!
Side note: also going to subscribe to the Arch newsletter to avoid mishaps like this in the future.
"[OK] Reached target Graphical Interface" after login before getting booted back to the login screen
Found this when we were cleaning out a family member's basement. I don't know anything about who owned it other than that it was a family member from a few generations back.
Saved my ass a few times
Steam won't run The Sims 4
Living the power user life over here
Looks like those XYZs ended up being irrelevant to my situation (figured as much seeing as looking online didn't give me much information).
I needed to reinstall plasma-x11-session per a recent update since I still use x11.