My friend is so much prettier then me.. HELP?

She is so pretty she has really nice blue eyes and mousy brown hair and medium colored skin and I have dark brown eyes and dark brown hair with olive skin. All the guys love her no joke and compared to me she is so much prettier. Like my brother even thinks she is 'fit' and when I'm next to her I feel really ugly. I have got some compliments from some guys like I have nice eyes or whatever but I hate my eyes and when I'm next to her I just feel ugly. I admit I am a bit jealous of her she is stunning and then I look in the mirror and actually cry. I know I seem like a right idiot or whatever but she is really popular with everyone and I have no self esteem,have anxiety and all. I have tried my best to cover up my flaws but I still feel really ugly. How can I make myself prettier?..because I'mbeginningg to feel like shedoesn'tt want to hang out with me anymore because I'm ugly and would rather hang out with a more prettier, popular girl. Shehasn'tt said that but I just feel that way/