Well, this is actually a glitch in 1.16.0.53 beta. There's this weird jittering glitch where I can't even do anything. I have to restart the game without using my controller. Btw this happens when I connected a controller to my phone and then play minecraft with it. This also happen when you're in water. Also, with the controller. So please fix this is the next update. Pleeeeeeeeaaaaaaseee