Low bar was a real revelation for me. Once I switched to it my squat struggles (namely knee pain, back pain and mental uncertainty) evaporated in fairly short order.
You look pretty good. Nice bar path, way past parallel, good control of the weight. I have just one tip for you. It looks like you are already squatting when you close your mouth. Try getting your air before you begin your descent.
I get a big belly full of air and I try to push that air out of my whole chest cavity. Then I get tight. Then I commit to the squat. This works for me, YMMV.
There's plenty of other stuff to know about squatting, but I think you will do just fine.
Keep at it!