One possible fault could be that the character development wasn't as deep as it could have been. It felt a bit rushed at times, leaving you wanting more depth.
Since we only have the title 'my fault novel', it's impossible to tell who the author is. There could be many unknown or emerging authors with such a title. It could also be a self - published work by an amateur writer, in which case it would be even harder to identify the author without more research.
Well, without more context, it's hard to say precisely. 'My fault novel' could potentially be a story about a character who constantly feels that things are their fault, perhaps in the context of relationships, like a person who blames themselves for the breakdown of a friendship or a romantic relationship. It could also be about a more general sense of guilt in a larger story setting, such as in a crime - related plot where the protagonist wrongly believes they are at fault for a crime they didn't commit.
The Fault in Our Stars is about Hazel and Augustus. Hazel has thyroid cancer that has spread to her lungs. Augustus had osteosarcoma and lost his leg. They fall in love. The book shows their experiences, like when they travel to Amsterdam to meet the author of Hazel's favorite book. It's not just a love story though. It delves deep into how they deal with their impending deaths, how their families are affected, and how they find purpose and joy in the face of a tragic situation.