Bugs on frame Minecraft

The game is very slow for me sometimes and it gets stuck and its fps goes down. When I move, the fps goes from 55 to 30 and to 15 and 10 at once. my device : android 11 name: Motorola one action core:8core &403MHZ -2.21ghz& ram:3.8 gb & storage :128 gb fix problems please I waiting for update thanks