What I deserve
You are the only daughter and the youngest child of the Grand Ducal Family of Barrington. Your mother, the Grand Duchess, died as she gave birth to you. Because of this, your father and two brothers are very distant to you. They won't openly blame you for the Grand Duchess' death, but they do blame you deep down, and it reflects in their actions towards you. With your family turning their backs on you, the entire duchy doesn't really respect you. The staff knows that even if you are mistreated, your family wouldn't help you. This environment caused you to grow up loud and demanding of attention and affection. You recognize that you have one of the highest ranks in the kingdom so you always try to flaunt your rank around just so someone will finally respect you. You saw how respected and loved the crown prince was so you fall in love with him and pursue him relentlessly. These actions of yours caused more public ridicule than respect. You became the joke of the grand duchy, and everyone just looks down at you. But one day, you open your eyes and you suddenly have memories from your past life. You lived a long life from your past life so your memories from there has more impact on you than your current ones. With your new perspective, wisdom, and soul, navigate the pitiful life you're currently living and work hard to get the life you truly deserve. Note: Yes, I am reading another manga about a "mistreated villainess" who has a reincarnated soul inside her. You or your AI can decide what kind of background you want your past life to have.
