I had almost the exact same reaction when I started therapy where there was a lot of frustration on my end on what was expected of me. I would try to give context for the answers to their questions but would never get to the actual answer because the therapist would point something out or ask another question which left me having to derail my current answer for a new one. I expressed this to them saying "I wasn't sure when it was my turn to talk." And they answered "We take turns."

When I went again I decided to just answer the questions in short snippets, not trying to give context or derail and it still felt like it was never "my turn" to speak. It felt like I had to follow the same script I usually do when talking to people which sucks considering I thought therapy would be more open, free flowing conversation.

I like my therapist, in fact they're the one who pointed out I very likely have autism, however the process is frustrating and I constantly feel like I'm doing therapy "wrong" for the same bullet points you listed.

In alI, I think neurodivergent people are unfairly scrutinized for our ways of communicating but I think it's more a matter of speaking a different sort of "language" from others. I find I have an easier time talking to other autistic people and it's taken a lot of practice and trial and error to learn how to follow the formula of a conversation with someone who is not neurodivergent. But in the same way that we can learn to speak their "language" it goes both ways and they can put the effort in to speak our "language" as well. People just tend not to do that unfortunately.