Instead of thinking that guys just don't like you, have you thought that maybe your extravagant dresses and your beauty are too much for them to handle. I'm not saying that you should dress down for their sake. I'm just saying that maybe they are just afraid of being rejected. It takes a lot of courage to stand up and tell people how you truly feel about them.
While us girls are just waiting to be asked out, guys are probably just as anxious and afraid.
3 reasons why I think you haven't found someone:
1. You haven't found the one. Everything happens for a reason if it's meant to be then it will happen.
2. Your trying too hard. Just be yourself. When you find the one you don't want him to like you for your extravagant dresses or your expensive makeup. He should like you whether your in jeans and a t shirt or an extravagant dress. It shouldn't matter.
3.Enjoy being single! When you come across the one, you want to send a vibe that says your happy with who you are and your status. You don't want to come off as being unhappy and wishing you can change your circumstances. Think of all the things you don't have to worry about because your single.
Btw have you tried flirting. Guys love being admired and looked up to.

I wish the best of luck to you