One of the great things about Linux is picking your distro. However, I’d suggest sticking with the latest version of Ubuntu desktop if you want to game.
Way more users means problems get solved there first (after Steam Deck, of course). File system support is good, and while I don’t use NTFS partitions anymore, they worked fine for me. The user count also means larger communities of support.
If down the road you want to branch out, go for it! But play it safe for now. If you’re used to Windows, install WinTile and Dash-to-Panel extensions in GNOME to make things familiar.