Dude please, see a nutritionist or something, lots of countries have free healthcare. You are better than this. If you eat a bit more, you won't be scrawny. There are so many benefits to having a healthy weight, such as a better mindset to fight normies/chads and other degenerates that keep ruining this world.
Maybe try drinking more milk please? Maybe get on soylent or something. There are also protein shakes and meal replacement meals that you can sign up for, if you see a doctor they can put on a plan.
Please you are better than this, my problems are purely mental and I can stop anytime I want, I have good control of what I do, but I know the pain that is associated with not eating.
Do you watch anime or manga? I can show you some cool food manga or anime that can help you understand yourself a bit better.