The Villainess Became the Savior After the Bad Ending

She wakes up as Cordelia, the most wicked villainess in a fantasy otome game with a doomed bad ending. (Western fantasy.) The original heroine triggered a bad ending and caused the world to collapse. She was forced off the stage, and the male leads fell into darkness. Now the whole mess has landed in the hands of a new player: Cordelia. Reborn into this life, Cordelia just wants to slack off, make money, and enjoy a comfortable retirement, maybe with a love interest who hasn't gone dark. The System wants the villainess to save the world, but the villainess just wants to give up and take it easy. If she doesn't save the world, she'll die from poison and get stuck in a loop? And she'll only get the antidote if she saves the world? The villainess: “Uh, well, why not just find an alchemist to make the antidote?” The original male leads keep picking fights and showing up in front of her one after another. The villainess: “Did you take the wrong medicine? Stop interrupting me while I'm earning my retirement fund.” But one day, she discovers the truth behind the world's collapse. (The leads are both masters of playing dumb, constantly testing each other. Between them, they've got eight hundred tricks up their sleeves.) (The world is falling apart, and both the male and female leads are completely unhinged!)