Hello, could you solve these bugs?

BBCHello, I am a bedrock minecraft player for years on my mobile that has 1 gigabyte of ram. I wanted to tell you that I downloaded the latest version of bedrock minecraft, specifically 1.16.100.04 (the last one that came out) and I ran into some problems 1 when I wanted to create a world it took a long time, 2 there is a lot of lag, download the fragments and the rendering to see if the fps increased and they never increased, 3 the creature generators are invisible and it is very difficult to distinguish them, I hope they solve it in a new version please solution in that this game i love pls