Self confidence

As I’ve gotten older my self esteem and confidence keeps getting worse and idk what to do. All my friends are so pretty or fit or curvy and they keep saying that they are so ugly! Sometimes I just want to say to them if your ugly then what am I? To make matters worse, the only guys that are interested in me are creepy perverts on Instagram who won’t leave me alone. I just feel so ugly but whenever I say that people get mad at me. I don’t know what to do anymore. Advice?