Fantasy: Have I Become Cannon Fodder in Novels?

A cannon fodder character who traveled through time in a fantasy novel and couldn't survive more than three chapters? A character who serves as a stepping stone for the protagonist to level up? Get the plot reversal system! From a tragic character to the protagonist of the plot! The heroine never looks at her, is she just a spare tire? Haha, starting from today, I will let you know what domineering means; The ants that the hero can kill with one finger? Sorry, I am the protagonist, everything you have is mine, and what is mine is still mine! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.