We don’t recommend asking for feedback on how you did or your chances for admissions. Doing so can signify to your interviewer that you lack good judgment or aren’t confident in yourself or your answers.
Try not to use the interviewer’s demeanor (their body language, facial expressions) to indicate how you are doing. Many interviewers have a poker face or maintain an inscrutable demeanor purposefully.
Many candidates think they bombed an interview, but weeks later, they get an acceptance letter into the school of their dreams. Just focus on being yourself and answering the questions with honesty, clarity, and confidence.