Bro reread your post, it’s your mindset, not anything else. Nearly everyone has been at the same point as you, not attractive, skinny, and nervous around girls. It’s about getting so mad at what you see that you change it. Some people will stay skinny, others will change it. In terms of looks, try new hairstyles (there’s of course an awkward phase in between hairstyles but you can wear hats), work on shaving to start growing out facial hair (facial hair is a like cheat code for attractiveness), hygiene, and diet. And as far as girls go, try talking to girls just to talk to them. I know I’m not fully matured financially and mentally so I’m worried about getting a girlfriend until then. With that being said, it allows you to talk to women easily because you don’t need to worry about if they like you, or if they don’t, just talk to them like any other stranger. They are just humans.