
Well, two danmei novels made me cry heaps:
Online Dating Boyfriend Is Actually An Alien (because of long separations and terminal illness, which made me miss my recently passed away brother *ugly sobs*) https://www.novelupdates.com/series/online-dating-boyfriend-is-actually-an-alien/ it's not completely translated so I used MTL with the raws
Transmigrated as the Cannon Fodder Abandoned by the Movie Star
https://www.novelupdates.com/series/transmigrated-as-the-cannon-fodder-abandoned-by-the-movie-star/
which is a triggering danmei about someone with suicidal ideation and a very realistic depiction of mental illness, you want to either stab the scum ML or send some knives to the sadistic author

And if you read Western BL, the two most tragic and tear-jerking emo reads I can think of atm are:
The Song of Achilles by Madeline Miller - retelling of Greek tragedy that rips your heart into smithereens, death of major character https://www.pdfdrive.com/the-song-of-achilles-a-novel-e196985601.html
The Persian Boy by Mary Renault - historical romance about Alexander the Great and his Persian catamite which really kicks you in the gut since ML has two wives and death of major character https://www.pdfdrive.com/the-persian-boy-e198162574.html

aww sorry I got carried away with my novel recs! but some tragic emo BL manga/webtoons are:
https://www.mangago.zone/read-manga/saha_lee_uin/
https://www.mangago.zone/read-manga/hana_no_miyako_de/
https://www.mangago.zone/read-manga/banana_fish/
https://www.mangago.zone/read-manga/lonely_to_organdy/
https://www.mangago.zone/read-manga/zankoku_na_kami_ga_shihai_suru/ (this one has abuse)
https://www.mangago.zone/read-manga/no_6/ (has anime adaptation)

https://www.mangago.zone/home/mangalist/290491/ This is a good unrequited love list XD. He always makes quality BL lists! But he doesn't read tragedy.
I mean i did read the 10 years where i love u the most but they didn't hit me hard and december rain too they didn't do much. So i really need to find something that can bawled my eyes! So GIVE ME YOUR SADDEST SHIT!