Not had covid, but about 2 years ago had a Parvovirus-B19 infection which triggered a reactive arthritis, which means 2 years later I'm still having steroid injections and my joints are more or less in pain. The medical summary is basically "sucks to be you I guess" but it's a semi-common side effect of a virus infection.
So yeah, all I want to say is that virus infections are not a joke, even if you got through one "fine" it can absolutely have devastating and life long effects on you.