Making a backup of your personal data is always a great idea, because of many reasons. For example, your disk may fail permanently.
You could try reinstalling a few packages, like kernel(s) and their headers, GPU drivers, and some other essential system packages.
If that doesn’t help, the easiest way to deal with this would be re-installing the system.
Tip: if you re-install the system, look for word REISUB in this forum and make your system more fail safe in case you need to forcefully reboot because of various system problems.
Edit: here’s the link: [Tip] Enable Magic SysRq Key (REISUB)