From my experience, at your age, it's all about accessibility.
Makeup is like an invitation to boys. When you wear makeup you are saying, "I want you to think I'm pretty. Please think I'm pretty." This is appealing to the insecure guys you know.
These girls are easy. I don't mean that in a sexual way, I mean that they are easy to approach, easy to talk to. Guys at your age are intimidated by confidence. They aren't attracted to it, yet. Wearing a lot of makeup at your age signifies insecurity, and guys are much less intimidated by it.
So no. Makeup won't make you prettier. Especially at your age. Makeup just makes you look sad and insecure and, if you want that type of guy to like you, go crazy with it. But really, you don't need those guys, you don't sound like you want those type of guys and frankly they are a waste of time.
As you get older, boys will get smarter, and they will realize that the prettiest girls are the ones who don't have to hide behind pancake thick makeup.