This is my first time squatting low bar, so any help is appreciated.
Looks pretty good, you could get your elbows a little more under the bar. This might require widening your grip some. Focus on tightness with each rep, treat them all as singles. Looks like you were a little loose in your upper back, your hands should feel as if they were pulling the bar into you, similar to the feeling of the bottom of a lat pulldown.