Books like 人間失格 by 太宰治?

Pretty much what the title says. I’ve not read much in terms of books or novels, and I’ve found myself unable to access my games in japanese, so I’m stuck.
人間失格 was the only ‘proper’ book I read back to back, and while it was painful as hell, I really enjoyed it.
Can you recommend me some more like these? I mostly want a compelling story, and the difficulty should be around the same I guess. It can be by the same author too. Hopefully, they are free/accessible, too? I don’t really have much spare money.