Why do I feel that there are so few first-person novels?

First-person novels usually allow the reader to feel the author's emotions and perspective, so they are more immersive and can better express the author's emotions and thoughts. But at the same time, this kind of novel also required the author to better grasp the reader's emotions and perspective so that the reader could feel the author's emotions more truthfully. Because authors need to be more proficient in grasping the emotions and perspectives of readers, the number of first-person novels is relatively small. In addition, some authors may prefer to use third-person novels to better express the story and characters. First-person novels are challenging to write, but if they can successfully express the author's feelings and thoughts, they can also bring readers a more immersive reading experience.