Idk if u know this already, but u might like it
https://www.mangago.zone/read-manga/choudokyuu_cheat_akuyaku_reijou_no_karei_naru_fukushuutan/
“With One Day Left I'll Break All the Destruction Flags: "Serves You Right!" RTA 24 Hour Record“
This manga has kind of the same feel and villainess storyline.
You could also try “The Villainess Reverses the Hourglass”, “ Light & Shadow”, “ I’m a Villainous Daughter, so I’m going to keep the Last Boss” they might also be similar to what you want.
Do y’all know any other manga or manhwa that have a main character similar to this one ? Like calculated and actually focuses on her revenge without getting sidetracked by romance