I imagine if you're mostly gaming, and most of your games are Steam games, then SteamOS might work? I haven't personally tried it, so maybe it's support is not great outside of gaming?
There's no SteamOS for the Desktop yet (the old version doesn't count, it's completely outdated). If you're ok jumping through hoops to make the steam deck recovery image work on the desktop you're the type of person that can handle gaming on any distro with or without steam