I feel you, I just also cry it out by reading..
try this they said it's heart breaking..
https://www.mangago.zone/read-manga/10_years_where_i_loved_you_the_most/
here ya go, im numb most of the time and these made me bawl like a bitch
http://www.mangago.zone/home/mangalist/1090460/
https://www.mangago.zone/home/mangalist/1195145/
http://www.mangago.zone/home/mangalist/1103164/
http://www.mangago.zone/home/mangalist/636848/
https://www.mangago.zone/home/mangalist/957720/
try this? one of my fav..
https://www.mangago.zone/read-manga/kimi_no_yume_o_mite_iru/
can someone pls try understand me cuz i really really need the most saddest story that can make u cry over a month pls im begging cuz lately i have this weird uhhhh how do i explain it... oh its just i can feel anything and when someone express their feeling its like theres a filter that i feel the opposite and im becoming numb and can feel emotion? and theres this side of me that only wants despair and so i want a tragedy and saddest story if truly i can feel anything if not i will visit a psychiatrist soon