Mind if I recommending a manga?
https://www.mangago.me/read-manga/the_one_within_the_villainess/
https://www.mangago.me/read-manga/ijimeru_aitsu_ga_waruinoka_ijimerareta_boku_ga_waruinoka/
When talking about satisfying revenge I can only think of this two. The first one have a good premise! The translation is not bad (but not good). The second one is about bullied victim who became teacher for revenge (he tried to stop bullying).
It's kinda not what you're looking for, but hope this two match your taste (≧∀≦)

Can anyone give me recommendations of mcs actually being ruthless and take revenge to those who wronged them, especially their family? Idc if it's bl or straight, romance or no romance, as long as mc actually gets revenge by either ignoring them and leaving, or actually act on the revenge.
Just read a horrendous story(BJ villainess), so I wanna cheer myself up.