Lag issue in Minecraft also with solutions

I am facing a problem in Minecraft : Bedrock Edition which is high lag. It started with just 40 fps and drop even 5 fps. This lag issue makes Minecraft unplayable in mobile. I was highly recommended to add a option in "video setting" which resulted to higher fps by disabling many unwanted thing or reduce animations and graphics. The button will be named as "Anti-lag" or "Reduce lag". Also it having a feature to limit fps to 60 which makes game not to be crash