I've had no hair since I was 5. Why do I have to be ugly?

I'm a 16 year old male. I'm really skinny and I have alopecia. I've been working out for the last 6 months but it doesn't help much I'm still skinny even though I gained 20 pounds. I'm ugly. Bald and skinny. No girls have ever liked me. My friends have had girls crush on them but not me nope. I've had girls tell me to my face I'm ugly. When I look in the mirror I can't stand myself. All the other guys at school are well built and good looking and some don't even work out. I have horrible genetics. I don't get bullied cause I stand up for myself. Sometimes I feel less than human. I'm trying to boost myself esteem. I go to the gym and I play basketball and make good grades at school, but at the end of the day I'm still ugly. People have told me it will get better but my mom works at a college and when I go up there I see the same thing as high school. Girls chasing good looking and buff abercrombie/hollister wearing dudes.I don't see how it will ever get better for me because it will take me years to get a good body

All of this has made me very bitter.
I know what you are going to say. All teenagers feel like this, but not all teenagers actually have a REAL problem. I have a real problem. I've had no hair since I was 5.

I've workout, play basketball, but I still feel terrible because most girls think I'm ugly. I'm tired of being judged everywhere I go. What should I do?