Look, i'm going to be honest, like i always am. By the looks of your questions, you sound very insecure and that can lead to trouble with girls. You need to get more faith in yourself because if you come across as easy girls will run a mile. Instead of wondering what you're doing wrong with girls focus on your damn education, because you're 13 and you have your whole future ahead of you to worry about that. Just take my advice and if a girl shows interest in you, DO NOT just rush into it and ask her out, we hate that. I wish you luck.