1. Buy squat shoes.
2. Keep your wrists straight.
3. Bar position seems a little too low. Just below the spine of the scapular, not lower.
4. Don’t lean so much forward at the top.
5. Stance looks extremely wide. Shoulder width is enough.
6. Maybe slow down a little. These aren‘t dive bombs but you’re really fast.
Hip drive, knees and back look fine to me. Please buy real shoes and film again.