@bejad007 Anyway good way to find more is to look for the tragedy tag with something like drama
https://mangadex.org/title/110/bitter-virgin
Also there's the Deep Love series of mangas, it's josei, doe some of it is pretty gud.
https://mangadex.org/title/521/shi-ni-itaru-yamai (It's kind of, I think it mostly is just that ending kind of ruins it, but it's worth a read still imo.)
https://mangadex.org/title/9185/itsuya-san (little bit bittersweet, mostly not doe)
https://mangadex.org/title/807/nozoki-ana (It has some of that, mostly drama, but it's pretty good, more on the side of bleak tbh imo)
https://mangadex.org/title/12218/not-simple
Also https://mangadex.org/title/9589/kasane , which is well it's quite bittersweet mostly tragic like a tragic theatre play, which fits. It starts out kind of cliche but man it's real fucking great, apart from the ending being kind of eh. i highly recommend it, despite its flaws one of my personal favorites