First thing, look to the obvious stuff...You are lanky: Long legs, proportional to short torso and your femurs are hella long. They are in fact too long to adopt a full upright oly squat you are picturing in your head . Unless you get your feet out very wide
(think sumo style PL squat) you're not going to mimic that idealized semi vertical shin, upright torso squat form.
Second obvious thing. The squat itself looks ok. The bar stays over your midfoot most of the way,you have a pronounced sticky point and you need to open those hips up a bit.
Try nudging your feet out a shade, opening your hips more and let the bar stay where it needs to be (over your midfoot) regardless of back angle
Also...have trod this rode leverage wise.I think you'll benefit from repetition squatting for a while,sets of 5-8 and pause squats. Set of 3. This will help you mightily with the next thing that is going to flair up. Upper back tightness. but...for now,at these weights,your back is doing a good job and the overall form can be worked with.
Hope this helps.