I finally got a new phone a bit ago after my carrier gave me a hard time limit on when my creaky old S6 would stop being able to make calls on their network.
I used to have quite a few games on it, but the limited and slowly shrinking available storage space, as well as the phone getting progressively slower and more weird
meant that over time most all of them disappeared. But now I can do stuff again!
What's good these days?
I generally like puzzle games (played a bunch of 2048, Twenty, and you wouldn't believe how much mileage I got out of the various Candy Crush games. Solid puzzlers despite the aesthetic and the nagging to buy stuff)
I would generally prefer games without gacha mechanics or a bunch of energy gating.
I do like card roguelites in the vein of Slay the Spire, though most of the ones I'm aware of I've generally already played my fill on PC, so if there's any mobile only offerings that are good I'd be interested.
Ditto stuff like Stardew Valley. Love that game but not interested in playing it on my phone when I could play it on my desktop.