This app was mentioned in 4 comments, with an average of 1.25 upvotes
Go back to regular, non-freemium games. The main FF series is as good or better than Mobius, and there are many other RPGs from quality developers. There's no way you've played them all.
If it has to be a mobile game, and you care about story, I liked this one. It's very different, but well written.
If it has to be a gacha game, then there are a paltry few which aren't cash grabs. This is a tower defense gacha game with no micro transactions. It's good, but it has one major flaw: you need to grind early or you can trap yourself.
If it has to be a mobile game, and a gacha game, and not shitty... Card City Nights is all I can think of.