I Feel Like I Can Still Save It

When I woke up, I became the evil heroine in the book. The male protagonist who was my childhood sweetheart regarded me as his biological sister, but in the original plot, I was jealous of the female protagonist and acted like crazy, and was eventually sacrificed to death. Screw love! I quickly hugged the thighs of the male and female protagonists in the original book, made elixirs to gain favor, and determined to be a well-behaved group favorite. But why is the plot getting more and more wrong? Even the villain in the original book who kills without blinking an eye has become my exclusive bodyguard: "Save my life, and this life will be yours." Wait... I feel like I can still save it!