Why don't you try some RL plants off two? If you're right handed you're going to need less thoracic extension and shoulder flexibility to "dunk" since you can get your arm behind you (unlike in a LR plant with the right hand up).
If you have a stronger right leg and you kick with your left, then a RL plant should actually be a more stable plant for you.
It's the hamstring off one leg... that's what I see. You're actually using your glute pretty well of one IMO, and you also have the correct armswing (I can't armswing like you are, I can't get both arms back like you do).
Off two maybe the most glaring thing is that you're VERY little lowering the center of gravity during your warmup. If you'd be able to improve on that, and start lowering better in preparation of the jump, you'd right now jump higher. It's like even in your penultimate step you're still pretty high, and then you're suddenly getting lower in your plant, which is very hard to control.
Yeah after looking at the videos I have to say the way I squat now is the best way. It's not like the knees aren't going forward... they are quite a bit. So the quads do work here too.
In the deadlift I stay with the hips high and load the posterior chain, and then try to lower them a bit while at the same time starting to lift (knees go a bit forward, there is some quad load as well at that point).
Obviously the form will suck from a point on, although with 160 kg it doesn't look THAT terrible (there is some back bending but I expected to look much worse).
In the clean... it's just a terrible thing with the lack of the rack position... I either catch it on my chest in a very high position or I fail the lift. At least I can use lighter weights and maybe benefit from the more specific speed of the lift to the jump...
In the snatch, the more I went up in weight the more I turned my hands inside.
It made such a big difference. Before doing that I had the tendency to throw the bar forward (because that feels more natural, like in a KB swing, where you keep the arms straight all the way). But when I did this it was easier to keep the bar close to the body.
For the calf raises, that ROM is definitely VERY shallow. That's why I filmed it in the first place - to see how bad it is. After that I did sets with 70 kg and full, complete ROM. It's still very difficult because you have to maintain the balance.
I've had it much worse than you... it could be a bunch of things: irritated SI joint or a piriformis mini-rupture or inflammation etc.
If it doesn't go below the knee it should be a hernia.
Sometimes if you have a rupture muscle you don't know about and that inflammation inflames the sciatic nerve as well, then you might get this. At least that's what I believe.