ok weird i don't have this problem and i play at higher settings but I only have a p30 pro,
so my guess is you either have some software issues,
your phone is just completely outdated but then it's not the games fault
or the game isn't compatible with your phone because even if we both have android phones Brands have still huge difference in their programming, like the drivers of each phone is different etc.
or your hardware isn't compatible, maybe your processor just can't process the game or some shit like that