I suppose the logging from the Os there is the same as journalctl. I'm new to Linux, but I've done Hackintosh quite a bit, so a lot of similar commandlines and debugging. I digress.

Have you tried making a new user, booting from a live usb or booting into a different desktop environment? I feel those are the lowest hanging fruits where you can check if it hangs universally or just on your main user account. Would help narrow it down a little if you haven't been able to spot anything in logs.

Which distro are you on?

Was there a kernel update recently by chance? Have you tried falling back to an earlier version? Got any timeshift backups?