I feel you, I am struggling with same issues. Recently my job is having us go in office twice a week. The first day I got on the train in the morning a guy got in and started going up and down the cart kicking chairs and being violent. I got off at the first stop and waited for the next train on an empty platform. I was terrified on the train and on the platform. I try different combinations of trains every time I have to go in and when the day rolls in I build severe anxiety. Therapy might help as someone suggested, but as I work in the field is not helping me very much. It’s not helping because as I try to tell myself the fear is unjustified and it’s in my head encounters keep happening proving that the threat is real and I can’t calm myself down . I’m sorry you are going through this and from someone that is experiencing the same thing as you, I feel you. I’m looking into getting a driving license and driving myself to work but that’s the only thing I can come up with.