Is there any good straight manhwa with smut but not where they make out every 2 chapters �...

Is there any good straight manhwa with smut but not where they make out every 2 chapters also I am searching for a manhwa in which MC is reborn and in her past life she was in love in a knight, she has a sister she is evil and her father is using her for political reasons. She dies bacause of them and thinks the knight is going to save her. In her second life she marries duke who doesn't like her at first but then he fells in love. His father is bedridden, and his aunt is at fault fot this