Seriously though, a lit comes down to genetics, how pretty you are, whether you're good socially or socially awkward, etc. A girl who by luck of the genetic lottery comes across well to a guy will be treated well by him, ones who don't have as good traits by the genetic lottery won't be treated as well.
Put yourself in the guts shoes, if you're with a girl whose not all that, not great to be with chances are you're not going to care to much. It's just something you have to accept, there are probably people far worse off that you who do to get to date at all.
Best thing I can think of is wear clothing that isn't trashy but stylish and a bit revealing, crop tops, skater dresses, kind of quite fancy versions of that that are a little bit sexy looking and may help you appeal to men more. Also watch what you say to men as in treat them how you would like to be treated. Some women get in their high horse or give attitude or think they should be treated like a princess. Just look for a man to treat you how you would treat your friends and treat the man how you would treat your friends (hopefully in an even handed respectful manner). Communicate well with each other and don't get into silly mind games and rubbish like that. In other words make sure you are bearable to be around and not thinking he should treat you in a special manner, all that should help.