I don't think I've seen any dramas where the FL is pure evil. But if you're open to dramas where the FL is "bad" in some sense and the ML is "good" consider trying some of the ones below where the FLs have certain villain-like characteristics (e.g., cold, rude, ruthless, materialistic or focused on power or their career, etc.) and the MLs are all very sweet.
I don't think I've seen any dramas where the FL is pure evil. But if you're open to dramas where the FL is "bad" in some sense and the ML is "good" consider trying some of the ones below where the FLs have certain villain-like characteristics (e.g., cold, rude, ruthless, materialistic or focused on power or their career, etc.) and the MLs are all very sweet.