You always had a lot of good suggestions, so I'll check these out.
Oh really? Thanks for the appreciation.
If you're done with that there's always stuff like Altar of Plagues, Finnr's Cane and Heretoir. And the Deafheaven that has been mentioned is also quite dreamy, although not necessarily to the suicidal point.
But in my opinion Amesoeurs is some of the best moody stuff to listen to. That side project of Alcest's Neige and Les Discrets' Fursy if you know/remember them? Oh, there I mentioned it: try Les Discrets. They're like an even more artistic version of Alcest.
To continue Neige's stuff: Lantl?s is absolutely recommendable. Great black metal with experimental stuff taking you everywhere.
It may sound obvious to some, but Drudkh and Hate Forest pull off atmosphere and in the former case a feeling of depression as well.
Forgotten Tomb is also very suicidal. And Cheerful Depression.
Fen is a weird combination of shoegaze and pagan black metal. Very atmospheric. In the same vein: Wodensthrone, Winterfylleth, all English bands.
Nortt for some black/doom, Sort Vokter if it may get really weird. Strid are DSBM pioneers. Then there's Urfaust and they sound absolutely insane.
So, I hope that will be as appropriate for you. Feel free to ask me about stuff I mentioned and that may be absolutely new to you.
I've mentioned most of these and other bands about two or three, perhaps four threads ago in one of the last posts. If you care, try to find it in my content.