Hey man, welcome here. Couple of things I noticed on your squat.
-You're doing high bar, are you aware of that?
-You don't seem to be going low enough
-Your not shoving your knees out, which contributes to the above
-Your stance looks too narrow
-Stretch
-Get new shoes, flat soled ones
: )
You might want to start a form check thread to get better feedback on that.