Chances are you somehow act really creepy, which you do not see yourself. Ask a friend for a mock interview. Record it and watch later.

Don't have a friend? Hire someone. A friend cannot do mock interviews? Hand them a list of 10 questions that you remember from all those previous attempts and tell them to read it in solemn voice.

Nowadays the interviews are remote. Let a friend observe your interview and then ask their opinion. (I think recording these might be likely illegal? idk)