Rec rec rec

Here
https://www.mangago.zone/read-manga/even_though_i_become_a_side_character_i_m_being_adored_by_an_overprotective_duke/

https://www.mangago.zone/read-manga/you_re_a_supporting_character_just_love_me/#:~:text=GO-,He%27s%20a%20Supporting%20Character%20but%20I%20Love%20Him%20Anyway,-Start%20Read

https://www.mangago.zone/read-manga/for_my_abandoned_love/

https://www.mangago.zone/read-manga/cashman_of_a_ruined_game/

https://www.mangago.zone/read-manga/july_found_by_chance/
If u don't mind a straight romance, this is it, it's really good, and it has a kdrama adaptation too :)

For my abandoned love. It's a slow burn, and me personally didn't really like it cause they don't get to the pointtt (no miscommunication) and talk too much business

Thank you guys have a good life