Hey, Spidey, I decided to stop by to check out your lifts. If you won’t mind me commenting on your lifts, I’d like to. I bench a lot more than you (I benched 205X13 a couple weeks ago on my rep day, and have a really out dated paused max of 285), and my beltless pause squat is as strong as your belted squat. I am just telling you that so you know I am not some online keyboard form warrior or something like that. lol
Anyway, for your squat: Your knees are caving a lot. That is somewhat common in quad dominant squat styles like yours, but is also really awful for you (knee health wise) when you cave that much as a low bar squatter. In my opinion, you will want to push your knees out more actively in the bottom of the lift, and try to think of opening up your hips when you are descending in the bottom 2/3-3/4 area of the lift. You might also want to try to use your glutes and hamstrings a bit more in your squat.
Your bench looks fine other than you probably want to tuck a little bit more (it looks like you are flaring a lot from the 205X3 video). You could also just use gaining a lot of mass in the arms, shoulders, and back. Also, how wide is your grip? It’s kind of hard to see in your video.
Also, I have to say this: You have a strong deadlift. However, your form could use a bit of work. Your knees cave a lot in your sumo deadlift, especially when you get the weight moving. You may want to pull in your stance very slightly while you are working on getting the strength, and mobility to not have to cave in the bottom.
You may also want to work on your set up. Looking back to earlier videos before you most recent ones (the most recent is hard as fuck to judge form on), you need to open up your hips in the bottom, and arch a bit (it pulls your hips down while getting your chest up so your shoulders are behind the bar).
Back when I pulled sumo (and still whenever I use sumo as an assistance exercise), I set my stance, get a big breath of air and brace my abs, grab the bar, pushed open my hips (think about opening up the hips while pushing at the sides of your feet and getting your knees to track with your shins) and pull the slack out of the bar while thinking about arching (this will force you to get upright and your shoulders behind the bar while getting your hips in the right position) then I pulled the weight by pushing out at the sides of my feet while leading with my chest, then finished the lift by just focusing on pushing my hips through once the bar got past my knees.
Also, where the heck is your glute, and hamstring training? I haven’t seen a single RDL, SLDL, good morning, GHR, back extensions, pull through, swing, hip thrust, or anything aside from a quad dominant style of deadlifts that trains your glutes or hamstrings. Try to include at least one hip hinge exercise (hopefully one big compound like SLDL/Good morning/RDL, then one small one like GHR, pull through, back extension, DB/kettlebell swings, etc) as an assistance exercise every time you squat and deadlift. You are probably (and you look like it) super quad dominant, and your body is trying to use them as much as possible. In one video you didn’t even lock out half of your deads.
Anyway, good luck on your lifting. Feel free to use any of the advice as much as you want (or not use it at all if you are inclined to do so lol).
By the way, you could probably benefit from wide sumo SLDL’s. To do them, get a very wide stance (your sumo stance or slightly wider depending on flexibility), push your hips back while keeping your legs somewhat straight (your knees shouldn’t be locked, but shouldn’t bend a lot), then grab the bar, arch your back and extend your hips while pushing from the sides of your feet and squeeze your glutes hard at the top then lower slowly, pause on the floor or reset then repeat as many reps as you want (I use them for moderate reps).
I had gotten these from Louie Simmons (he had a massive hard on for them/still does).