Not bad.
Don’t look up on the way up
You’re going a little too deep in the second video. Slightly below parallel is enough.
Not sure about the shoes. Do they have an elevated heel like typical squat shoes?
Not a fan of the exaggerated breathing between reps. In my opinion you’re telling your mind and your body „Oh shit, this is heavy!“ when you breathe like that. These are anything but grinders yet so I wouldn’t treat them as grinders.
One big breath before each rep should be enough and better tell your mind and body „This is fucking easy!“