I don't find 15 that young for dating, especially in this generation of time haha. I think that it is great that you want a girl that truly respects herself and doesn't need make up to be beautiful! Being your self is always the way to go with girls, but there are many girls out there that look for the fake boys. Don't let them take you down! I do the same thing, and have been for such a long time and believe me, you will find the right girl and forget about all of the other ones that had rejected you, because at that moment you will see how those girls were never right for you. I hope you keep trying
because it does take time to find the right girl!