The Saintess Returns As A Villain summary:

The Saintess Returns as a Villain manhwa, Beatrice has lived as a saint for 10 years to prevent the disaster of the empire and win the love of her family. One day, her place as a saint was taken away by a girl named Lina Cumbell with her black hair . "I will kill you, your family and all your followers." She is framed as a warlock and executed. Beatrice's second life began like that. "Even if this life becomes a villainess Lina, I will avenge you!!" The new life of Riche, a true saint who decided to become a villain, is redrawn.