It sounds cliche but practice makes a master, just talk to all girls whenever you get a chance. Also talk to them like you don't want anything from them, kinda like when you talk to another dude like no homo because your bored in class and you start making fun of the prof or something. Guess with age for me came confidence so maybe girls pick up on that they do have superpowers in some ways they can just smell what's going on with you within like 5 seconds. I used to drive myself crazy about my flaws and limitations but now I'm 100% comfortable with them and I just go for what I want even when the chances are slim. The greatest freedom is not really caring anymore either, when I talk to girls now I don't really care what they think of me or whether I can get them I just enjoy the process it, of course it's nice when I realize there is attraction for me but I don't seek it. Plus I don't get nervous around even a 10/10 chick and it's just liberating because she holds no power over me which is probably something on the rare side and they probably notice that. Tbh though there is always that one chick every once in a while that does get your head a little twisted and I think about them more than I have time for lol.