Hey, I've been there..

I used to job hop every now and then due to my seniors, my managers, my colleagues.

I used to think that I need to be supervised by talented superiors so they can guide me to my success one day.

Then one day I realized that no matter where I go, there's always a shitty, selfish, self-centered, politic-playing seniors/manager/colleagues.
Cause nobody is perfect, and those superiors may have weaknesses and will not reach our expectation.

So what I need to do? I just do my best and perform what I can..

You said that your ex seniors suck at teaching, If you can self-learn then go ahead, if not, just do whatever you can, don't push yourself too hard.
If they not willing to teach you, then it's their problem..
Bear in mind, it's their role to guide you and achieve goals efficiently and effectively.

Please slow down and take a few days vacation, do meditation, take rest etc..
Don't stress out..

And please don't always think of want to perform and win a medal and show to those people. Be yourself...be comfortable..
Success needs patience..