How to cope with having overreacted?

Had a bad run in with a psychiatrist today, I was attempting to get diagnosed or at least told what to do… but instead I felt like it was mostly a chat about what ADHD really was, and at it I got confused briefly with my facts, in my perception it seemed like he was questioning me, teaching me, being very overcorrective and talked over me, didn’t seem like he wanted to help me just make time. He was googling some stuff up right then and there and didn’t read the documents I gave him, implying to me that they weren’t valid which I knew… that’s why I was there. (The documents were from a specialist currently in another city, he can’t officially diagnose me online so I wanted to try an actual diagnosis) I left because he triggered me so badly bro 😭 I had similar experiences with psychologists, even though I hated how they treated me I knew for sure they weren’t malicious, their comments just hurt me. But now I’ve been researching more and I think that I should have expected this… that maybe I overreacted and that he was just fact checking and that’s just the way he is, and can’t stop myself from hating myself now 🥲. Any advice?