playing chess on chess.com but when i drag a piece to move it the screen also moves..how can i stop this..

Not sure if I can help, but I've noticed the same thing on webpages. The only way I was able to resolve it was by zooming out to the regular sized page. If you are zooming in during play, you will get the result you're experiencing. Could be the website also. You could also try locking the zoom feature in accessibility settings. Maybe turn the room off while you're playing chess.