I think finding the right therapist takes a big, huge, boat load full of good luck. Truly.
I've seen SO many Ts. And, each time, I thought they would be able to help. And, some of the endings... omg. It's been amazingly bad.
I've just started seeing a new one in the last couple of months. I like that she has experience with the things I need and is really easy to talk to. So far, no huge red flags. But, I have no clue if she'll be able to help...
I think the one thing I've learned is to pay attention to red flags early on. Because when I look at my last T, the things that worried me in the first couple of sessions never got better. I hoped that they were one-off occurrences or random anomolies for him... but they weren't. A couple years later, those things were still there bothering me.
That experience and realization have made me much, much more likely to decide quickly (in one session sometimes!) that a T isn't a good fit. In the past, I'd give them a lot more time/room to see if they might be helpful, but, I don't feel like I have the time, money, or patience for that anymore!
Good luck!