How can I look older or get guys?

so I’m 21. I am also really short so I have a baby face. my friends are taller and they always have male attention. I get some sometimes but it’s rare. I don’t think I’m ugly and I’m not. but sometimes it feels that way. why can’t I go to a party and leave with a number? I feel like a shadow around my friends. I can’t make any friends either but they can. is there something wrong with me?
How can I look older or get guys?
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