So vulnerable, I have to be sincere. European and American art galleries historically are not only promoters of great art, they are creators of markets. That may be where you could shift focus.
Your worth is that you are young, eating rat, living a life of passion, filth, messiness, body horror (per my comment on such) unique and unknown to those with money. They crave you, not for your art. That's worthless to them. The art, as photographs per Sontag in my other rec, is simply a receipt that they owned a piece of your lifestyle for a moment. No one who will buy your art will likely give a fuck about your art. Stop seeking those. Find the Glengarry Glen Ross customers seeking life, escape from drudgery, a need to prove something to themselves. Let your art be that for them.
Enough bs theory, now for implementation. You won't sell your art, but you can sell the frustration, bloodsweattears, dedication, sacrifice that drips from your post. You can do so by simultaneously reminding yourself you are not creating ART but CREATING art. Your work and worth is not on a canvas. It's not the art. It's in you, the artist.