Screams of loneliness

I really really want to find some like really heartbreaking stories that scream loneliness, tragedy and so on. Honestly I'm specifically looking for stories where the mc ends up completely alone, and that's it, be it because they thought it was better this way or because they were thrown away by others. No one is there for them, they end up alone, or they disappear alone, nothing more yk?.. Like that's the end
Or if that doesn't exist at least that the trope it's in the story where the MC feels alone or they are left or feel completely alone at some point