Your free squat looks kinda odd ???, like you sit back a bit and then to get deeper into the squat you get alot of forward knee drift.
Btw your lunges are whats called a barbell split squat, different exercise.
http://www.exrx.net/WeightExercises/Quadriceps/BBSplitSquat.htmlIs there a specific reason why you rotate your body sideways on the depth jumps btw?
Single lex box squats look good
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