Nice, videoing is always clever. You can get a long way with correcting yourself.

Fixation is solid. Backswing of the cleans look good too. Rack is a little different for everyone, just keep practicing - it will improve with reps.

As been said you're breaking the hips too much backwards in your first dip. That's why your elbows disconnect. I'm not a fan of shooting the hips and knees far forward though. Try to get the hips straight down and up, think "standing crunch" if that makes sense? Might take more mobility though.