Hey! I need some advice.

I’m 19 years old and I’m struggling to get a girlfriend or female friends. I’ve tried Tinder or other dating apps but no success, I can get some matches but girls are not interested in me. And also some girls act rude towards me and later they just block me for no reason..

In real life I’m very shy, quiet, different than other teenagers, If I would go and talk to random girl, she would just laugh at me.. It’s true. And I don’t know about clubs either, everyone would just make fun of me because I look young (yes many people don’t believe that I’m 19), I’m small (5’9” and 125 lbs)

What can I do ? Srsly need some advice. Like should I change my style, or should I change my hairstyle... Idk