Hey, it can be tricky when it’s a group situation. Often when people judge other people a lot, you’ll find that they also judge themselves critically too.
Have you tried talking with that friend & telling them how you feel & how you’d like to be treated instead; setting some boundaries? If they are still gaslighting your feelings & boundaries, then maybe you can explain the situation to your other friends & maybe together as a group you can chat and see if you can come to some sort of understanding. Either way, you know who you are and trust that. So not let anyone else make you second guess what you know to be true for you! 🤗