Can you pinpoint what you did to your system before? Did you do a system update? Did you move game files around? Did you add any repositories trying to install something that also updated other dependencies, or alike?
I’m not familiar with mint, but maybe you can see whether you can easily downgrade to the previous version you had. And hold off on the updates until a fix is published for the broken stuff.
But before that, take a look at the mint communities and see whether it’s a known issue and whether there is a manual intervention needed to fix it. Something like “newest update broke some proton games”, etc.
Help. Various games stopped working and i have no idea how to diagnose the issues
What stopped working:...