My advice? Nut up.
It sounds like "stop being a pussy," but in reality it's more of a "quit being a bitch." Honestly, with the weights you're lifting and your body weight, there's no way you've plateaued. I've been there, and the thing that got me through it was just putting more weight on and rolling with it. For instance, I thought I was stuck below 225 for squat for a really long time. I wasn't ever able to consistently hit all my sets. The way I got through it was to just throw the extra weight on there and do what I could. I might hit my first set, miss one on my second set, and two on my third set. The next week, I would add more weight even though I hadn't hit them all. Before I knew it I was squatting 275. That 225 number was something I could throw up easy (although I should say that once you hit 200+ in any lift, that shit feels heavy no matter what).
Get it out of your head that you've hit a plateau and you'll be able to push through it. When you're up to mid 200's on bench, 300+ on squat, and 450+ on dead lift, then maybe I can buy that you've hit a plateau. But right now it's all mental.
Yea, "just lift more" isn't really worthwhile advice.
5 days ago I did 275x4 & x3 on deadlift. 5 days before that 275x4 & x2. Today I couldn't even get 3 reps. All my lifts have gotten worse this week. I've been doing the front end of a pyramid structure with only 2 sets at the max weight. I take 6-7 sets to get to max weight (includes 2 really, really light sets).
For example my squat goes:
95 125 145 165 185 185
I think I need to accelerate that with fewer sets and do 3 at max weight. Every exercise I did today was worse than previous. I'm at the extreme of high weight low reps/sets, and I think I'm suffering because of it. It gave me ridiculous gains for a month or so, but I feel like I'm not stressing my muscles enough now. For example today I did squats, press, deadlift, and then added cleans and (light weight) front squats. I shouldn't have the energy for cleans and fronts squats after a day like that.
Also keep in mind, that while those lifts are small for most people, they are by a huge margin the most I've ever done. There's not a single person at the gym that works harder than I do. I just have an insanely skinny frame. At 19 I weighed 125lbs, 6ft. The shit mesos or endos can do is just unobtainable for me. When my previous bench plateau was 160 - for years, getting to 190 in a month is a pretty significant jump. There is no chance in any universe that someone with my body, without steroids, could hit 300+ squats and 450+ deadlifts. It's just impossible. I would also bet that no pro olympic deadlifter could ever run a 4 minute mile. You can't just will your way out of genetics
To Brahma, the things I can do with legs is very restricted due to knees. Plus, there's no muscle that low bar back squats misses. As I said, my squat & deadlift have made preposterous gains lately compared to where I was. At this point there's no way I'm getting off of doing squats 3 times a week. It's essential for my knee recovery and I just like it too much. I'm mostly looking for suggestions on how to modify what I'm already doing to get over a plateau. Increasing reps, more sets, or something like that. I don't know if there's a generally agreed upon way to get over a plateau. I'm kinda just looking for that.