Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni Tensei shiteshimatta…

Summary

Wealthy heiress Katarina Claes is hit in the head with a rock and recovers the memories of her past life. It turns out the world she lives in is the world of the game Fortune Lover, an otome game she was obsessed with in her past life... but she's been cast as the villain character who tries to foil the protagonist's romances! The best ending the game has for Katarina is exile, and the worst, death! She'll have to find a way to avoid triggering the flags of doom, and make her own happy future!

(Source: Crunchyroll, edited)