Edit: The crashing issue is also happening to me. I upgraded my phone to S22 Ultra from S21 Ultra. Single Player is fun, but honestly... you run out of serum before you can do much. Even with the approx. 180 more you get from doing daily challenges. It's just not enough to improve your characters with resources and play story. There's no exploration so unlike Genshin grinding is impossible. I'm a whale-player who has played since release and even I am annoyed with how little I can do