You should also try the new free to play game Marvel Snap. It's actually fairly good about not requiring you to pay money yet still offer some good progression and unlocks, and there's a lot of good ideas in there for cards which only really work in a digital way or with a bunch of counters (do some things randomly, or add a bunch of temporary and situational buffs to the cards, etc), while providing super fast games (like 3-5 minutes) with a tight and small deck of cards (a player's deck is only 12 cards), and every single card is unique. And you play on locations that also all have unique abilities.

I'm friends with a bunch of people in the board game industry, as well as being a game designer (with a game signed witha publisher that still hasn't been published yet after like, four years), and everyone thinks Marvel Snap is super fun and well designed (and addictive). It's the only mobile game I've really gotten into (that wasn't just a port of a physical board game) in several years.

Slay the Spire is another one to consider as well. It's a rogue-like game where you fight with cards and build up your deck based on the choices you make in the run. The cards are fairly static (they even made a board game adaptation on Kickstarter very recently), although they can all be upgraded, which makes the cards better. I play that on PC but I know it's out on mobile and Switch as well.