Why dont I have friends?

Customers at my job and elderly people seem to like me very much , but people my age dont seem to want to be friends). I've tried so hard to make girl-friends or any friends for that matter but nothing. Im nice fun and outgoing... what gives :/. Everytime i go clubbing with a girl-friend she never wants to go with me again even if we are laughing, dancing and having a great time.
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+1 y
Im a pretty girl so I have been told. What am I doing wrong
Why dont I have friends?
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