I've had depression at least since I was a teenager, possibly longer. There were better years and worse years, and after a few mostly okayish years, 2019 and 2020 just... threw me back into the dark nothingness void. I also suffer from anxiety, and I'm neurodivergent so... yeah having a defective brain is fun. 
When I'm in the depression state, the creative part of my brain just shuts off, I can neither draw nor write. I used to be able to make vent art in my teens, but now I can never do that. I can only cry, sleep, drown in my bad thoughts, and mindlessly pass time.
Right now I'm doing a lot better than a year ago though, thanks to being on meds for a few months now and some small but positive life changes. I'm not suicidal for the time being, and can actually work on art and even enjoy it. People romanticize creating with mental illness a lot, but all I can say about is, I would be a much better and more productive creator if I was completely mentally healthy, lol.