I’ve never had a single friend that is 100% body positive towards me. Everyone tries to get under my skin even when I go out of my way to lift them up. Should i just block and cut off everyone? I don’t see the point in caring about anyone anymore

I would try to tell them that you don't appreciate them commenting on your body and/or appearance. It's a boundary that you're allowed to have. As well as that, it's also important to realize that there are plenty of people you haven't met that are going to be friends, or people you just enjoy talking to. Sometimes people go through a time where they don't have any close friends, and although it may be painful, you can learn more about yourself that way. Then, if you want, you can try to find new friends (or they could find you, you never know), and you'll know exactly what you value in a friendship, and how you want to be treated.

Hm, some people just lack empathy. A friend went - Oh, you got grey hair - I haven't noticed the bit of grey at the sides of my head, before she pointed it out. Same with my troat, it looks chubby now, but she pointed out, that it always did, so now when I look at old pictures, I tend to see it as well. Maybe address, that you are not happy with them critisizing your looks. If the don't understand, or are not willing to at least try to change, you still have the option to cut them off.

You need to find yourself some non-toxic people. They're like slowly corroding acid.