Don't fret mate!
You can look at it from multiple angles. One, now you know what to improve on. Two, I, too, heard many people say they bombed the interview and then cry out loud "I GOT IN". I would stop feeling bad about the interview that has already passed and focus on the next one. 👍👍
Good luck, I hope you get in (so as long as you don't take my spot 😛)