Could you also please specify what are the other elements you want on the story (tradegy, face slapping, dog blood drama, psychological, etc.)? Or similar stories that you have read so the other readers would not recommend those anymore.
I like all of the elements that u mentioned i usually go for the sadder/darker ones and i would like it more if the seme is abusive some unrequited love novels that i remember are: Lantern: Behold the Bayonet(my favorite) Flying Gulls Never Land Muted Like love but not Childish flower Unspeakable Years of Intoxication
Black Lotus (Scum Gong all the way) Professional Body Double (Unrequited love on the first half of it). Love is too Frustrating (This story really is frustrating as told by the title). That's some of the stories I could think of. There's a lot more than that but I have to go and check my reading list.
Every world hopping novel where the gong is a slag is usually unrequited love. For example: scum shous survival guide.
A Hundred Ways to Kill a Heartthrob - QT, ML has unrequited love to MC. Certificate of Conformity - QT, ML has unrequited love to MC. Turns Out I'm Crazy - reborn novel Love, Expired - has a lot of angst