Reborn, Why Is the Plot Nothing Like I Imagined?

[Reborn heiress]+ [Sharp-tongued, tsundere, cold-faced researcher] In her previous life, Li Yiyu’s family fell into ruin, but her enemies still came after her life. She never expected fate to give her the chance to be reborn at the turning point, before all the tragedies began. Her brother mysteriously disappears, her father is poisoned, her fortune is stolen, and even her fiancé cheats on her with her best friend. The villainous mastermind is also beginning to show their face... Since I’ve been given the chance to be reborn, I, Li Yiyu, will defy fate and change my destiny. Wait, things started out just fine, so why is the plot veering further and further off course...? A sharp-tongued doctor dotes on her, while her adorable subordinate secretly confesses his feelings... Oh no, what should she do!