Gym, legs
Lift the bar from the floor with a flat back, pushing the floor away with your legs.
Best on camera: a slow, steady move with your joints in clear view.
Phone at hip height, about 3 metres away, filming you from the side.
Your whole body, head to feet, needs to be in the picture. The coach will remind you if it can't see you.
Bend your knees
Your legs stayed straight. Bend your knees to reach the bar and push the floor away.
Hips higher
You squatted the weight. Keep your hips higher than your knees, because this is a hinge.
Chest up
Your chest dropped too low. Keep it up and your back flat.