I have this reallly big problem with jealousy, Can anyone help?

Okay so, I have been struggling with my self esteem for as long as I can remember. Lately I’ve also been feeling very jealous of my brother.. Whenever we go out all my friends ask me ,, Is he single?’’ ,, Can you tell him about me?” etc. When it comes to me though, I never get asked out, I basically get no attention from boys, so I think its pretty fair to say that im the ugly sibling… My brother is also very smart. He flew out of country to a very prestigious university. Meanwhile im struggling with my academics which aren’t even remotely on the same level as my brother’s… I can’t help but to ask myself all the time ,, Why not me?” ,, Why can’t I be smart and pretty?” It’s killing me. I also don’t wanna envy my brother so much because he is soo kind and good for me , he helps me with everything… I really don’t know what to do I’m really depressed…
I have this reallly big problem with jealousy, Can anyone help?
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