Nobara is a great suggestion by @el_gringo_loco@lemmy.one, but I'd also throw out a suggestion for Bazzite if you want the "SteamOS"/Steam Deck experience.
It does have the KDE desktop environment underneath to do all the non-gaming stuff as well, but if gaming is your number one focus, it's a pretty cool setup.
It just boots to desktop unless you have AMD GPU and install the deck edition to a regular PC. Seconding the rec though. It has become my main.
What's cult like about nobara? I use it on a few devices because it has the kernel patches for Microsoft surface devices already patched in.
I would like to know this as well, I've heard it a few times on lemmy but never any explanation about it
Also I don't use nobara yet but I plan to when my Q2 framework 16" arives