Fantasy Romance
https://www.mangago.me/read-manga/ellin_s_solhwa/
https://www.mangago.me/read-manga/the_reason_why_raeliana_ended_up_at_the_duke_s_mansion/
https://www.mangago.me/read-manga/as_you_wish_prince/
https://www.mangago.me/read-manga/why_are_you_doing_this_my_duke/
Modern Romance
https://www.mangago.me/read-manga/arrogance_and_romance/
https://www.mangago.me/read-manga/what_s_wrong_with_secretary_kim/
Also loved masked woman, which someone already mentioned.
Recommend me some completed manhwas
Thanks in advance