“you’re so skinny. do u even eat lol”

i’ve always been naturally skinny, i’m 17 years old and i’m 5’4 and about 110. i’m so insecure, all of my friends have big thighs and big booties and i’m just so small... i eat like a freaking pig and i cant gain any weight. it’s so hard for me to accept myself for the way i am when everyone around me constantly makes me feel like shit for something i can’t control :/ its so annoying when people are like “you should feel lucky you’re so skinny” or “you have nothing to be insecure about you’re so thin” like we all have our problems and we all have our insecurities so why are you bashing mine. i just wish there was something i can do so that i can gain atleast 10 pounds... i feel like i’ve tried just about anything...