The book Zhen Xuan fits the plot of the time-travel novel you described. It tells the story of the female protagonist who was framed and time-traveled to ancient times to become the seventh miss Zhen Xuan. She was determined to live a better life, but she fell into a power struggle under this identity. This novel was written by the author, Nine-Ten-Six. It was an ancient romance novel. I hope you like this fairy's recommendation. Muah ~😘