I'm sorry to hear this doesn't run well for you.
You need a powerful android device to make it mork, on my phone (from 2019) it doesn't lag but I understand why it would for some, I expected it to not run well on all devices since it's such a heavy game with a lot of animations going on.
Actually, the fact that the size is smaller\more compressed helps with the performance, if it was bigger, it would lag more. This is done by design to improve the performance.
The next version will have some new optimizations for android, so it should run about 15-20% better but you will still need a relatively powerful android device to run it. There is sadly no way around it.