I play a lot of games over steam

If my main concern is playing game with Steam, most mainstream Linux OSes should be fine. If I have to pick one… Linux Mint is very beginner-friendly, and I’ve heard great things about Bazzite too. SteamOS works flawlessly with Steam out of the box, but I don’t know how easy it is to set up by yourself

If you happen to also like non-Steam games: a lot of them can be added as a custom application/game via your Steam Library, which does most of the heavy-lifting: you only have to specify which compatibility layer to use & sometimes do keymapping. Setting up wine on its own is not for the faint-hearted

I personally use Arch because AUR (a user-uploaded repository, a lot of popular Linux OSes have their own versions) makes it easy to play a lot of FOSS games… but I can’t recommend Arch Linux for beginners