Bro....

Your knees are not parallel with ur toes when you move down/up. This will put a big strain on the side of the knees and risk injuring urself. Be careful of ur left leg as it sways out when you were moving up. Both legs aren't really sync together when u move up.

Don't lock ur knees when you are at the starting position.

Control the down and up motion with the same speed. YOu are kinda going slow halfway and explode the rest of ur way up.

If u must, lift lower poundage to perfect the form first.

Good luck...