can somebody please recommend good isekai/historical manhwas? i've literally read so many ...

The grandmaster of demonic cultivation

the flower bloomed by the cloud

Check out my list! It’s mostly isekai, May have something new hidden which you’ll like ^^ https://www.mangago.zone/home/mangalist/1066523/

sorry wrong name
https://www.mangago.zone/read-manga/the_flower_that_was_bloomed_by_a_cloud/

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

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

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

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

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

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

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

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

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

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

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

Idk of this is what you were looking for but from what I've seen in your library, you haven't read these.

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