It's been Year Of The Linux Handheld for gaming since 2022, the best platform to play games is Steam Deck where updates are clicking "Update" in the System panel. You can run either Bazzite or SteamOS on your own hardware, although I haven't tried that.
sure "best" is subjectively true for my criteria: it plays the largest number of games with about zero annoyance / friction. maybe desktop windows plays more games, but it certainly has a bazillion more frictions and annoyances
