You can try these, but I am not so sure that this is what you're looking for
Trash of the count's family
The world is money and power
this is along the lines of what you are looking for i think
http://www.mangago.zone/read-manga/pregnant_wife_one_plus_one/uu/nml_chapter-1/pg-1/
Seconding this masterpiece (๑•ㅂ•)و✧
AHH THANKS SO MUCH FOR THIS RECOMMENDATION!! Its absolutely lovely!
eeee so glad you enjoyed it (≧∀≦)!!! is mc rlly is just big brain (⌒▽⌒)
Aghh where can I find manga/manwha whose mc is a witty bastard who outsmart situations and can just surprise you(@￣ρ￣@) Please recommend if you know some! Ive been searching left and right! Thank you in advance ^ - ^