Your knees need to get back a bit more as the bar passes (shins should be vertical). You are also bending your arms a bit early (have straight arms as you jump). In terms of the racking issue, you are swinging the bar away from you (doing a reverse curl) instead of keeping it close and punching your elbows underneath. I would practice the racking on its own. A good was to do it is start in the rack position and reverse the movement down to the hang. Do it super slow and really try and keep the bar against your chest as you do it. It will likely be a bit challenging to do it and that will reveal areas of flexibility you need to work on.
P.S. Squat video deleted because most reps were too high. No high squats please.