About gaming, from my personal experience, it’s overall pretty straight forward. When issues happen, you just got to have patience to read through logs and search up on Google or similar any suspicious parts of the log. Worst part is usually DRM/anticheat, but from what I can gather, usually pretty isolated cases are problematic due to compatibility, usually requiring the devs to go out of their ways to make the DRM incompatible.
As for the distros question, perhaps Linux Mint? It trades off bleeding edge updates for the sake of stability. Just avoid the Debian-based variant of Mint for now as it’s still in beta.