anyone have any good casual-ish f2p-friendly mobile games?

tl;dr i've been looking to try to find a second one i can goof around with when i'm not doing my arknights auto-deploys, and well. genshin + pokemon masters + twisted wonderland can't run on my phone, digimon re:arise + epic seven had too much active grinding to hold my interest (though i loved the story for e7), and i'm leery of giving tears of themis a try since i've heard the gacha is worse than genshin, which is the main reason i haven't gone back to genshin in months so.

i like games with a good story + strong characterization (arknights is v good with that), as well as "collecting" aspects (avengers academy + arknights are v good with that), and i want something that's easy for me to pick up and dabble with when i have some time but not the worst thing to have sit for 8+ hours between checks. gachas are okay as long as it's not terrible for f2ps, i've never played a visual novel but i'm down to give one a whirl i guess, and i have a slightly older android so i can't do anything super demanding hardware-wise.

lay some suggestions on me.