Have you recommended a modern reincarnation novel where the female protagonist died in a car accident in her previous life because of the female supporting character's promotion?

[Find a modern novel about rebirth. The female protagonist died in a car accident in her previous life because the female supporting character pushed her. When she woke up, she was reborn in the body of the woman who hit her. The original owner of the body was a scumbag. The fiancée of the scumbag seemed to find an excuse to break off the engagement because the original owner was fat. After rebirth, the female protagonist was very fat. Then, she lost weight for two or three months and went to a party. Then, I forgot. The scumbag and the male protagonist seemed to have some kind of relationship. I think he was the male protagonist's younger brother.] The female protagonist planned to use the male protagonist to take revenge. The male protagonist was a clean freak, so the female protagonist kissed the male protagonist and said that she wanted to disgust him to death. There is a chapter where the female protagonist sleeps on the male protagonist's bed, and then the scumbag man comes in. The female protagonist pretends to be intimate and sits on the male protagonist's lap or lean on the male protagonist. After the scumbag man leaves, the female protagonist asks the male protagonist why they are sleeping together and why he is not wearing clothes. The male protagonist says that he is used to sleeping naked.