Hey MC - love the headline.
Great log, great vids, great goals.
Alrighty then a lot of peeps have some awesome cues for your squat, listen to them, they are strong as fuck and know what they say.
The knee caving in is a fix now issue. But light bands around your knees in the early light warm up sets, think of pushing against the bands both coming down but especially coming up.
I look at you neck and finds the overextension a bit to much. Try to have the neck neutral look a bit down.
For squat videos there are tons of videos, I like Brian Alsruhes he has a log here on TN and is known as Alpha. His youtube channel is just plain Brian Alsruhe.
There are 3 videos when you’ve watched them he has what he call cheat sheets (it’s a short video with the important cues, not a how to cheat in squat).
Try google “lazy lifter warm up” it’s short, easy and good for ankle and hip mobility.
But hey keep grinding my friend and your goals will eventually come through.