What kind of super sad novels are there?

As a fan of online novels, I don't have the ability to access the internet to learn about the latest novel information. But generally speaking, the plot of a novel usually involved tragic elements, such as the fate of the characters, suffering all kinds of misfortune or pain, or encountering disasters, and so on. These elements could make the readers feel deep emotions and help the novel create a more vivid atmosphere. Although some novels had tragic endings, most of them left a deep impression on people.