I've mostly been playing a F2P game called Minion Masters. It's a card game, but the cards come alive in 2-lane combat like a tiny auto-battle MOBA. It has short game lengths (6-10 min are typical), is generous with F2P players (I've paid $0 so far), and has enough strategic (deck building) and tactical (card playing) depth to stay interesting throughout.

It plays great on the Deck without any configuration, even though it's "unsupported". I suppose some of the card text might be a bit small for some, but that's only relevant in the deck building screen where you can easily zoom in on cards. There's a UI option to read your partner's cards in 2v2, but I've never felt the need to. By the time you're good enough at the game to react to your partner's hand, you'll already know the cards well enough that you don't need to read them.

I should maybe add that I got a bunch of free cards when they had free DLC to celebrate the release of the game on Android, so idk if my F2P experience is typical.