
Like the og heroine is the bad one or something? Then:
https://www.mangago.zone/read-manga/the_one_within_the_villainess/
https://www.mangago.zone/read-manga/for_my_abandoned_love/
https://www.mangago.zone/read-manga/choudokyuu_cheat_akuyaku_reijou_no_karei_naru_fukushuutan/
https://www.mangago.zone/read-manga/i_will_divorce_the_female_lead_s_siscon_brother/

This one too, it's my favourite:
https://www.mangago.zone/read-manga/miss_not_so_sidekick/

I AM! Tis why I was craving for a story trope like that. It hasn't been revealed that the heroin was a villain but her attitude and all gave it away so much
It just kinda bothers me that when she's in a conversation with the characters, there's so much thoughts like bruh... Don't they find that kinda weird? So many pauses and the conversation's so cringe sometimes but all in all it was a good read halfway thru.

https://www.mangago.zone/read-manga/angelic_lady/ fits the description very well.

Honestly https://www.mangago.zone/read-manga/the_one_within_the_villainess/
Is one of my fav manga heroin is indeed a villain Absolutely a Must read.
https://www.mangago.zone/home/mangalist/3031060/ idk if this list will help thou
Do y'all know any historical romance transmigration where the heroin ends up to be a villain all along?