Not sure I’d consider myself a veteran…but I’ll give my input anyway.
As a general note for those exercises, you’re probably better taping lifts with weight or at a rep range that is more challenging for you. Particularly on the deadlift, it looks like you had a lot more left in you and everyone has perfect form until they use some challenging weights.
In regards to squatting, try getting the feet wider and sit BACK before sitting DOWN. If you bend the knees before or at the same time as moving the hips backwards, you will generally put more unneeded stress on the knees. Move the hips back first, and then bend the knees.
Deadlift looks good, but like I said, a heavier attempt would be more telling. Don’t sit for so long in the bottom position. Get your grip, stance, and mind set and then just rip it off the floor. No need to waste energy and possible fatigue the lower back hanging out in the starting position.