Why didn't me or my friends get picked?

Me and my friends are very pretty and normal but none of us got asked back by most of the top or upper mid sororities. I felt like I had great conversations with the girls, but its hard not to be discouraged. The only houses I got back were DG, DZ, AGD. These are great houses and I'm still very excited to finish recruitment but I'm feeling like I'm not good enough for the upper mid and top sororities. I know we are supposed to stay off greek rank but I'm scared people will think I'm weird because I'll only have the chances of getting into the "lower mid" sororities. What did I do wrong? I feel like I'm very funny and a good friend and I tried to show that in my interview.