😋According to the information you provided, I recommend the following bio-trilogy novels written by Ron: Dawn of the Living Dead-Bio-apocalypse, To Be or Not to Be-Survival, and Ruffian Savior. "Dawn of the Living Dead: Bio-apocalypse" told the story of the protagonist's survival in the apocalypse;"To Live or To Die: Extreme Survival" told the story of the protagonist's constant evolution in order to survive in the apocalypse;"Ruffian Savior" was a story of a lone hero. I hope you like my recommendation. Muah ~