Transmigrated into an Apocalypse Novel: Who Wants to Be the Cannon-Fodder Villainess?

[Apocalypse + transmigration into a book + strong male and female leads + not a saint + equally matched leads + everyone dotes on her + supernatural powers + zombies] Su Ran wakes up and discovers that she has transmigrated into a book. Not into ancient times or a historical era, but into the most terrifying apocalypse. That would be bad enough, but she discovers she's a cannon-fodder supporting female character. Thinking about the original plot, where she gives away money and a spatial bracelet, bustles around resolving conflicts between the male and female leads, and is eventually shoved in front of a zombie by the heroine as a human shield while she flees danger... Just thinking about what the original version of herself did makes Su Ran's blood boil. As someone who has transmigrated into a book, she won't follow its plot. The heroine wants money? No. Wants the spatial bracelet? Still no. Wants Su Ran to sort out her problems with the hero? Absolutely out of the question. Su Ran uses her advantages to stockpile supplies and, along the way, meets powerful people and joins forces with them. While the male and female leads argue over food during the apocalypse, Su Ran sits back and enjoys hotpot, completely content. So what if she transmigrated into the role of a cannon-fodder supporting female character? With supplies in her spatial realm, Su Ran says, so what if I'm cannon fodder? I can still live a spectacular life.