Soulstone survivors is really good with carried over progression so you can really get into it. Otherwise, I used Musou games when I had a similar time in my life. Mindless fun with story if you decide to get involved and plenty of upgrading of many characters to whittle away your time. Samurai warriors 5 runs perfectly on Steam deck.

Toukiden Kiwami is the one I keep going back for more. If it was possible to play on a small screen it would be Humanitz, I bought this a few weeks ago and already have almost 30 hours.

I’ve also done a reformat twice since I got my deck. All due to it becoming super cluttered with stuff I can’t seem to remove and have to do this to basically free up space.