manga like The Villainess Lives Twice, with smart FL and kind ML?

I made this list filled with stories that resemble to the one you mentioned. Their all very good. Do have a look at it if you want to find similar and good stories. I will put the link bellow.

http://www.mangago.zone/home/mangalist/452600/

Otherwise you should try: The reason why Raeliana ended up at the duke's mansion.
It's really good and has for now a more advanced plot.

Ps: I think I down voted your comment by mistake sorry.