BJJ,
A few thoughts from a competitive PLer here.
1. You have a high bar placement doing a low bar hip-knee pattern. With a hip back dominant pattern the high bar is gonna cause forward lean and difficulty hitting depth.
2. If that is as low as you can get the bar on the shoulders then I would adopt a high bar pattern with the hips going down rather than back. Less of a hip hinge and a little more accordion.
3. Definitely lower thr safeties
4. When unracking get your shoulders set and deep belly breath in before the unrack. Getting the unrack done and then doing that bracing breath I to the chest is gonna be a disaster later on. In the video, after unracking but before going down, you can see the bar shift up a bit and the elbows going back...this is from breathing into the chest and not the abdomen.
Hope this helps some.
