Some girls prefer quieter personalities. I know I do. I would sooner date a shy guy who worked up a lot of courage to ask me out than some guy who came over to me and started hitting on me. Best thing you can do, quite honestly, is to be a gentleman. No matter how feminist a woman may say she is, she always likes it when a guy holds a door for her. And for me personally, that means watching your language (I had a crush on a guy in high school. He was gorgeous and very sweet. He dropped the f bomb one time, and that was it. I was done. I don't even remember his name now), looking at my eyes, not my chest (or butt) when I'm talking to you, and listening to what I have to say.
But don't look at it as, "I'm single and it sucks." Think of it as, "I'm single and it's a great opportunity." There's so much you can do while you're single that you can't do in a relationship. You have to think of the other person. And when you're single, you don't. It's also an opportunity to experience life. And when you've done all that, you'll have much more to bring to a relationship. And when you're not desperate to be in a relationship, you're 10x more attractive.
You've got time yet. Being single could be great for a while.