Notice that the bar doesn't stay parallel to the floor. has anybody solved this problem before?
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Get a little more bent over early, set your low back, canter forward slightly(right over midfoot) and squat. You’re too much in the knees, not enough hips.
Agreed. Cue yourself by thinking “hips back” and “knees out” from the very top of the descent at the same time.
I know for myself when I think “bend over” I end up just bending at the thoracic spine instead of hinging more at the hips.
Should also hit depth more consistently too.