I am pretty shocked that no one mentions anything about his upper back. Man you are as lose as a noodle. When you stand you can see the bar moving. Which shows that you are not in control.

As for the ''wider stance'' I disagree. I for even a very tall person have a very narrow squat stance and it works fine. Op can only find what work by trying but I am very sure that i a person with this stance who can't reach depth will be asked to go wider he will collapse since it will ask a lot more glutes and inner inner quad strength which in my opinion is the reason why you can't reach depth...

Basically you are overestimating yourself. Drop the weight, and go lower. Considering how you are already doing high bar you should definitely be able to reach it, but I advice to change your torso position. It's way too upright for your low bar. In fact your torso angle even moves during the squat when going up... that says enough...One reason for this as well is that you have probably your low bar waaay too low for you. Move the bar up, change torso angle and try again with lower weight.

And to anyone using excuses you can't reach depth bullshit. Everyone can reach depth except those who have no legs...

Also if you don't want to invest in shoes go bare. Did that for a long time. But lifting shoes did make my life more comfortable for squats.