Screen freezes & FPS drops at times (almost often).

I'm playing Minecraft on Mobile phone. My device is Vivo Y95 4/64GB. I don't know what's going on with MinecraftPE lately. However, I've never experienced this before even before I bought Minecraft (using a pirated version). I'm experiencing the same issues that others may be experiencing too, namely the sudden screen freeze bug and a pretty severe fps drop. My phone storage is still fine with no issues at all. I played games other than Minecraft, it was fine and there were no issues either. Please mojang fix this bug. Sorry if my typing is like this, I'm an Indonesian who uses the translate app.🙏