I did terribly on my interview

When I was preparing a lot of people said the interviewer would go off script at first to get to know you but my interviewer got straight to the interview. My interview lasted only like 15 minutes and I think I was visibly nervous. I fumbled when answering the questions even though I’d been thinking over them for two months. I’m really disappointed in myself but I kind of expected to fail in this area. I did try my best to maintain eye contact and be respectful but I think I did a bad job answering the actual questions. I was also so nervous I forgot to give him my resume. Am I cooked?