How to get a girlfriend?
Have vibes that approximate the (type of) girl you want to attract and communicate in a way that resonates with her.
1) become physically fit and maintain a healthy BMI
2) shower and brush your teeth every morning (you should already be doing this desu)
3) don't dress/talk like a dork
4) be kind to others and expect nothing in return
5) develop social skills and learn to tell jokes at appropriate times
6) get a job and a car (you should already have these things by now desu)
You do all this and you'll get bitches in no time
This should get you started.
Make yourself presentable. Place yourselves in social situations that involve proximity to females. Your social skills, chosen social situation, and appearance will influence the quality of woman who will eventually take an interest in you.