You should read some manga not only webtoons....
https://www.mangago.zone/read-manga/ten_count/
https://www.mangago.zone/read-manga/saezuru_tori_wa_habatakanai/
https://www.mangago.zone/read-manga/ze/
https://www.mangago.zone/read-manga/kachou_fuugetsu/
https://www.mangago.zone/read-manga/kuchizuke_wa_uso_no_aji/
https://www.mangago.zone/read-manga/under_grand_hotel/
There is so many of them....
If you want super weird & twisted but an absolute masterpiece, read "MADK" I just recently red it and it's rlly good
Oh I've read a few mangas too! Ten count and honestly many others to name but some of the ones you recommend I haven't read so I'll be sure to check them out! Thank you darling
Ooh tbf I've been seeing it pop up here and there but now that you've said that I'm gonna deffo give it a go! Thank you sweet :)
Dark Heaven
Wolf in the House(1st couple is more on the sweet side but 2nd is quite dark)
Akuheki(I'd suggest you wait for the ending tho lol I've read it on Chinese site it turns out not as bad as its rating)
The Pawn's Revenge
A Painter Behind the Curtain(not really dark but I was hooked)
I'm in desperate need of some good BL manga/manhwas that will have me HOOKED. I've already either read or am in the middle of reading the gems like Shutline, Pizza delivery guy, Payback, Under the green light, A married Man, Even if you don't love me. Basically I love anything with a dark plot but also don't mind sweet stories like Third ending and Love Tractor, for example. Recently any BL I start reading I just get bored straight away cuz either the characters are dumb or the plot is not intriguing so PLEASE YA GIRL IS IN NEED OF SOME GOOD BL FOOD!