On mobile devices, a sufficiently powerful device is required for a smooth gaming experience, as the engine creators are increasingly experimenting with 3D in 2D games. Rendering mechanisms have been added to the settings. Sometimes, tweaking them can solve problems.
But it's better to play this game on Linux/Windows.
As for relationships... I don't think we'll be able to talk about an alternative until the Demon King storyline is finished. Then there'll be a chance. Until then, let's talk about great female friendship...