FWIW, I think bilski is on the right track. If I were coaching you I’d have squat to a box (not a real box squat, just a depth gauge) that was high enough to keep you out of excessive butt tuck. There is no front view so I don’t know what is going on there but sometimes it helps to think about externally rotating the leg instead of simply shoving the knees out. (This is subtle, don’t overdo it) The main thing you seem to need is to get the chest up (thoracic extension) before descent and keep it up. (Especially changing directions at the bottom) This will allow you to drive straight into the bar with the hips and legs instead of the good morning motion you currently have.
Do you use thoracic extensions on a foam roller? Besides curing cancer, this is a great way to get a feel for proper thoracic extension, which is awesome for a lot of lifts. The big thing to be careful with is to brace the core and make sure the movement comes from the thoracic spine and not the lumbar.
Once you can get down without excessive butt tuck and good thoracic extension, then spend some time down there with some pause squats or true box squats.