Not sure if all of them fit the mark, and probably good chance you've read many of them because these were decently popular at one point (***) = personal favourites:
https://www.mangago.me/read-manga/kamikudaite_aio_oshiete/ (***)
https://www.mangago.me/read-manga/hosik_s_story/
https://www.mangago.me/read-manga/dawn_of_the_dragon/
https://www.mangago.me/read-manga/unintentional_love_story/ (***)
https://www.mangago.me/read-manga/down_and_dirty/ (***) pretty dark though
https://www.mangago.me/read-manga/tameshi_ni_komando_itte_mita/ (***) sort of unrelated but I love this
https://www.mangago.me/read-manga/aporia/
https://www.mangago.me/read-manga/flashlight/ This one has some really spicy scenes
Flashlight is super good!
https://www.mangago.me/read-manga/behind_the_stage/ any recs like this one? need a fine ass obsessive/possessive ml but not too black flag please and thank you