I’ll never forget when an experienced physiatrist told me after interviewing that if she didn’t get the job, it wasn’t a total loss because of the interview experience. I never thought of it that way! To me, the only goal was to get a physical medicine and rehabilitation job offer.
What she meant is that the process of interviewing is a learning process. The more you interview, the better you get. You learn the questions you’ll be asked and can recall them and practice the answers afterwards for future job interviews. You become more comfortable with future interviews. You can review the interview and no doubt identify things you could have done better.
Acknowledging her attitude can in and of itself make you less anxious about the pm&r interview. Best wishes with your interviews!