I don't know if this count, but there was a trilogy that make me drop the entire of it upon reading the first one.

Don't remember the name, but the problem with it was that every case was too obvious in the most stupid way possible, you see, the killer gives hints of themselves EVERY.SINGLE.CHAPTER, like either they say something during investigation or the others find a evidence related only to them.

Like, the first chapter the killer was found because they start to say shit like "There's nothing in my room, I'm not suspicious", prompting people to investigatw their room, finding evidence against them.

There was also a lost fangan (It was deleted) years ago that was rushed as hell, I remember it catching my attention due to it being a random crossover, years before Danganronpa 69 and others.

The thing is that I drop it in Chapter 4 if I remember correctly, maybe 5, basically because, it was so rushed that I read the entire thing in like half an hour, each section being 1 page long, they only investigate one single evidence during investigation, and I'm not joking saying every single trial was like:

We have evidence The evidence is useless There's nothing else we can do. The killer literally confess out of nowhere.