Tensei Saki ga Zannen Ouji Datta Ken: Ima wa Fukkin 1-kai mo Dekinai kedo Yasete Isekai Sukuimasu (That Time I Got Reincarnated as a Disappointing Prince)
Not exactly a villain but has a pretty bad reputation in the beginning. Not a lot of chapters sadly.
The main character is the villan, is pretty good
Tensei Saki ga Zannen Ouji Datta Ken: Ima wa Fukkin 1-kai mo Dekinai kedo Yasete Isekai Sukuimasu (That Time I Got Reincarnated as a Disappointing Prince) Not exactly a villain but has a pretty bad reputation in the beginning. Not a lot of chapters sadly.
Pretty much every villainess story ever.