uhhh dude really talk to her

and ask her if she wants to hang out, you have to name the time and place

if your worried about your physical appearance join the football team and I highly reccomend the wrestling team sounds gay but it gets you ripped

Smile a lot and make eye contact.
DO NOT BE A TEASE!
Don’t be a man whore either, like don’t go flirting around with every single girl.
Be funny and make jokes, kind of making fun of the girl but not being mean..
Good Luck