I will destroy this novel (wmmap)

This function is about a girl who reincarnated in her favorite novel, but this girl does not get the life anyone would wish for, or the happiness that she deserves.
To say the least, she got pain, sadness and misery. she got a curse that no one wishes, that's so the o main characters can have a happy ending.

"This time I will destroy this novel and made my own story. Just watch me"

And here the story begins