It's not your fault that you were in a cult. When you're in a high control environment, you don't realize that other people are also controlling, that's what you're used to. But your friend doesn't sound loving, she sounds toxic, and toxic friends drain you.
I had to get rid of my toxic friends, and am just starting to make new ones. It's tough being alone sometimes, but I feel so free now that I'm not in toxic relationships. Real friends shouldn't put you down, that shows they are insecure, and you don't need people like that in your life. I hope you're able to find another job you like too, and maybe you'll find some new friends at work?
Now you have the freedom to do whatever you like! Apply for a new job, make new friends, be who you want to be. In time, you can create a new "you", maybe the "you" that you always wanted to be but were suppressed by the cult.
I agree with Lozhasleft, if you still like your friend, you can stand up for yourself and share your feelings with her to see if that improves things.