The FL we need

A gypsy, taken in after killing her clan and sent as a toy for the crown prince. Takes revenge and gives the crown to the 2nd prince but he ends up by "betraying" her and she curses him and kills him too (even if she loved him). Reincarnated with memories of her past life, she takes her sister's place to be wedded to the monster duke.

Illegitimate daughter treated badly by her family in both lives. Has to find one route so she can live. Able to tell "family" how she feels, even if they repent the damage has been done.

FL gets transmigrated into her novel as the villainess tho. She attracts the attention of the devil and helps her become a true villainess and get a backbone to get whatever she wishes (he's actually just there for his own entertainment of her end)

Just wants to find love in her new life (v low EQ) since that was her only regret before deciding to go (Universe was like "nah dawg" and just miniaturised her body after she expelled and gave the world back her mana). Her disciples were distraught ( kinda went coocoo) until they found out she was alive again.

Police officer FL died during her mission and is transported into another world. There she got captured and then sold to become a slave. The prince absolves her slave status so that she can be his chesspiece. She shows her strength to get respect

1st life lost her husband and daughter and tortured by her in-laws and finally burnt to a stake. 2nd life goes back to when she was mourning her late husband and daughter, decides to make her in-laws suffer as much as she has suffered whilst living for herself this time.