she became a villainess

A common trait is also being manipulative. The villainess will try to manipulate the situations and the people around her to get what she wants. She might manipulate the male leads by lying about the protagonist or creating misunderstandings between them to drive a wedge in their relationship.

Surviving as the villainess in such a novel could involve changing your character's actions. Instead of being mean and conniving as the original villainess, start being kind. This can change the way other characters perceive you. Also, use your knowledge of the story to your advantage. If you know there's going to be a war, you could start preparing for it in advance, like stocking up supplies or training secretly. It's all about outsmarting the plot.

Maybe it's because of a curse or some kind of fate. That's a common trope in such stories.

Maybe it's because of some complex plot twists and character developments that force her into that role.

Perhaps it's a way for the author to explore different themes and challenge conventional character archetypes. The decision for her to be a villainess might be to create tension and drama in the manga's narrative.

One option is to rewrite the story. Since you are now in the role of the villainess, you can start making different choices. For example, if the original villainess was always causing trouble at social events, you can choose to be a peacemaker instead. This will change the course of the story.

I would try to rewrite my story. I would look for ways to change my actions and motives so that I don't have to be the villainess in the traditional sense. Maybe I could find a way to work with the protagonist instead of against them.

To survive as a villainess in a deadly novel, you need to be smart. Try to figure out the key events and avoid getting involved in the dangerous ones. For instance, if you know there's a big battle coming up where the villainess is supposed to die, find an excuse to be elsewhere.

If I became a villainess in a deadly novel, I would first try to understand the plot and the reasons behind my character's villainous actions. Maybe I was misjudged or there were some misunderstandings. Then, I would attempt to change the course of the story. I could start by being kind to the protagonists and trying to form alliances with them instead of opposing them. This way, I might be able to avoid the 'deadly' end that was originally set for my character.

You could start by trying to understand the motives of your character. Maybe the villainess is not truly evil but just misunderstood. Try to find moments in the story where you can show her softer side. For example, if there's a scene where she's supposed to be cruel to the protagonist, instead, you could offer a small kindness. This would start to shift the perception of your character and potentially change the plot in a more positive direction.