Why am I single? What can I do to change it?

I'm 24 and have been single for awhile. Have had occasional flings here and there but never really had a serious girlfriend. I have attractive qualities and feel confident on most days but I'm also awkward, shy, and pretty thin (6'0 125). I don't go out too often cause lack of friends, so my social life is dwindling. I ponder on this topic on a daily. Is there something I'm doing wrong or any reason a man in my situation may be single? What can I do to change it

Why am I single? What can I do to change it?
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