Squat - you are going a little too deep and relaxing to get there. Drive up with hips and avoid lifting the chest mid way through the movement. Otherwise, it looks fine.
Press - you are trying to move the bar around your head. Reach forward with your hips, thereby getting your head out of the way, and drive the bar straight up. As soon as it passes your head, bring your hips back.
Others can discuss your deadlift and clean.
You need to find yourself a 7-foot long rotating sleeve barbell. Cleans are going to get difficult with the equipment you are using.