Minecraft keeps lagging out

Minecraft keeps lagging out all the time and it just really annoys me, and I was also wondering if you could send me a link with the code for beta testing with and app called test flight, because I am very good at coding and making good decisions and deciding what should be kept or not put out in public, I am very well known for so please contact me as soon as possible and let me know if it is a yes or no for beta testing, if it's a yes then I look forward to working with you.