hmm ok im gonna give u a list (not mine tho)
https://www.mangago.me/home/mangalist/638389/ mix of manhwa and manga
You can try reading this I felt sad reading it, I guess I cried because of sadness hope it fits on what you want to read
https://www.mangago.me/read-
manga/10_years_where_i_loved_you_the_most/
https://www.mangago.me/read-manga/ways_of_parting/
https://www.mangago.me/read-manga/miracle_illusion/

i need bl manhwa that can make me cry