Looking for this manga/manhwa

[GloryX]

Sorry for my bad english but any1 know the title of this manhwa/manga (i forgot) about condemned villainess (MC) tries to ruin her country for revenge. The only scene i remember is when mc used brainwash magic to one of the character (prince's guard, noble soldier) into becoming a killing machine, killing all his family and random ppl on street while saying " its not me, its not me". Also after getting condemned mc became a merchant guild. This is not " The one within villainess" btw. Thanks whoever answered this 🙏

 

[MrIncognito]

A Livid Lady's Guide to Getting Even: How I Crushed My Homeland with My Mighty Grimoires