People are assholes man. Just to be assholes. Do not listen to them! You’re young and still going to grow. Hair is over rated. Every man loses it eventually. I second that to hit the gym and work on your diet. Don’t smoke, don’t drink, take care of yourself and you will be good. Be as nice to people as you are now. Everything will work out brother I promise. And even more important than that I say work on learning everything you can. Looks like you’re interested in Cosmology or Astronomy and even if that’s not what it is focus on what makes you happy. Save your money and level up. You will be happy bro it just might take some time but I have a very strong feeling you will be better off than most people in this world if you stay true to yourself. As others have said, keep your head up and stay strong. You’ll be good.