It sounds like you might need an inpatient treatment like partial hospitalization. That's where you go daily to a psych facility, but you don't sleep there. It can be hard to find a program like that, as they are expensive to run. Such a program helped me a lot. I benefited from having peers to interact with.

Getting out of bed when you are very depressed is definitely hard to the point of feeling impossible. Any small changes in behavior that you could make can begin to push back the beast. I know it seems like depression is causing you to stay in bed, and that is somewhat true. Byut it's also true that staying in bed is part of what is causing you to be depressed. It gets like a viscious circle.