I left a therapist that was a very bad fit for me early this year after several rounds of back and forth. I left when I was in a bad place mentally because he was not helping at all and became very self centered and quite abusive. It was a messy and nasty breakup initiated by me, he did not want to let go of me at all. I did not have a therapist for a couple months and felt a bit disillusioned about therapy in general, but then decided to give it another go and started looking with a quite different idea in mind about goals and what sort of therapist I wanted to have. I searched quite a lot and interviewed a few, and I am now very happy with my current T. Glad I did not give up on therapy after the first one.

Could you maybe explore a few potential therapists? Meet with several and choose based on your own impression? I am thinking perhaps that way the anxiety whether it's going to be a good fit or not might be less since you try them out?

Also, my current T and I talk about my former therapy experience a lot, also compare my two experiences. I find that helpful.