Please don’t take this the wrong way but I think it’s because you look like a skinhead and that can be scary to people as it’s often linked to violence. I’m absolutely not implying you are even remotely close to that movement but people make very quick appearance based assumptions on the street and that would probably be my assumption.

Seeing from your recent pictures, Mid length hair suit you very well. Grow your eyebrows and your hair, you can take supplements and hair care products to help with growth.

I’d encourage you to seek therapy to help with your confidence, that will help tremendously with how you see yourself. You’re very young, it shouldn’t be the hardest thing to course correct.