You could try looking on popular fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. They often have a wide range of stories for various fandoms, including the Phantom Stallion.
The story in the light novel may also focus more on the backstories and inner thoughts of the characters. We might get to know more about the past of some of the supporting characters, and how their experiences shape their actions in the present. This can add a whole new layer of depth to the overall story compared to what we saw in the anime.
In some community newspapers, you might come across stories. For instance, if there are local businesses in a small town and one feels that another has stolen their customer base through unethical means, it can lead to a catfight - like situation that the newspaper might cover.
The anime may leave out some minor sub - plots that are present in the light novel. This is often due to the need to focus on the main story arc for the visual medium. In the light novel, these sub - plots can add more depth to the world - building and character relationships.
I recommend " Cultivation for Earth " to you. The main character of this book, Sun Meng, transmigrated into a mysterious game. He traveled through various worlds to cultivate and work hard for the survival of Earth's civilization and himself. I hope you like the protagonist's journey of cultivation from Earth.