So there has been something that has been bugging me, and it's that Fedora 33 cannot install updates to osu! at all. I have no idea what has happened, I have gnutls installed, both 32-bit and 64-bit libraries. Is there even another solution to this?
I had the same issue. Sadly I wasn't able to resolve it. So I switched to another distro. Now I have Manjaro and it works fine after installing lib32-gnutls package.
I got this solution given from ThePooN's Discord: add GNUTLS_SYSTEM_PRIORITY_FILE to Lutris, and give it the value /dev/null lul :shrug: but I switched again to Manjaro also