Looking for manga

I'm looking for a manga which is korean. So basically it is about the perspective of a villainous. The female lead plays a game first as the good female lead and then as the villain and when she plays as villain she's transported in the game. The villainous is kept as fake daughter of a family. She has 2 brothers. One with black hair and the other with pinkish hair. There is also a slave that she saves from slave house and a prince.i dont remember the name can anyone help me?