Wow tons of videos lol.
Ok, in order.
Squat) I just watched the first video. It is hard to tell a lot of things from a very low camera angle, so if you can find one a bit higher in the future that would be especially helpful. You break the hips first: good. You keep the back flat: good. You hit depth as far as I can tell from the camera angle with the plates and rack in the way: great.
Things to think about: 1) you need to stand UP with the weight--you never actually lock any of the reps out at the top! You are even unracking and bringing the bar out and standing there with your hips chambered back instead of upright. This adds to the tension on your back and creates some fatigue, but mostly just really interferes with the necessary glute action that should be trained in a proper squat. Also if you watch the end of the barbell you can see it sinking down and slightly forwards as you come down into the hole. The bar needs to trace a straight path. It does not, and this means either 1) your chest is lowering in the hole 2) your hips are not being pushed back far enough, or 3) your knees aren't pushing out far enough. Or some combination of those.
Bench) Good things: good arch, good set-up and good job keeping your butt on the bench and your feet plastered to the ground. Also good job on a) keeping your forearms vertical with regard to the floor and tucking your elbows on the way down. You also do a good job on keeping your chest up. I personally don't care if the bar path is perfectly straight ala Westside or in a SLIGHT "J" pattern ala a bunch of other strong benchers, so you're ok there. I would personally prefer you not press back all the way over your head--keep it to a slight curve.
Things to work on: The first couple reps are ok but as you go on you get less and less consistent with where you press the bar too--what I mean is how far back towards your head you lock the bar out. Your sides also waver independently of each other: sometimes your left arm is pressing the bar farther back than your right and sometimes they are even. They always need to be even and the bar always needs to be horizontal across your body, not at a slight tilt with one end farther down than the other. See seconds 35-40 on your first bench video. Your arms need to be tighter--your lats AND traps AND hands need to be squeezed harder on both sides throughout the motion to cut down on wiggling of the bar.
Deadlift) Looks ok for the most part, you're always going to have something go wrong on the heavy sets. That being said in your last DL video your hips rise a bit before the rest of you does, so work on that. A little bit of back rounding but that may just be from overall fatigue, which is understandable.