YOUR BODY SHIFTS TO ONE SIDE
You put more weight on one side as you settle into your squat, so your body looks a bit off-balance. Use a mirror or video yourself doing the move to gauge any off-side leaning.
You’ve probably suffered an injury on the side you lean away from. If it’s recent, you’ll feel some discomfort, but if it was in the past, you’ve likely developed a muscular imbalance. If you don’t fix it, your better side will just keep getting stronger until it can no longer overcompensate, which could result in further injury.
See a physiotherapist to figure out what’s causing you to favour one side. When you have your diagnosis, the physio can recommend moves to remedy it.