A book with a character like Arthur Morgan?

Like a tired depressed person, trying to fix things, trying to be good. Kind of navigating life. Maybe they get saved by someone, it's fine if they don't get saved either. I just want something heart wrenching and heart warming at the same time. But it's also fine if the book kills me 🙂

It doesn't have to be set in the past or the wild west. It can be a children's book as well if the story fits. Bonus points if they're old