Brenley–
Yes, it may be that you are trying to do too much at once.
Pick one or 2 things at most to be working on each day.
You want quality time over quantity of time working on mobility.
When you say” I have done all of these in some form or another” take a step back and take one each day or so.
Take your time and go through it completely.
Have you watched the Episodes that address benching?
The cause of the issue may be you need to stabilize or create torque more effectively.