I am sorry you are feeling so tired. I am truly saddened to know someone/anyone else is struggling.
I can relate. I have been in a severe depression and have felt chained to my bed. On better days, when I can force myself to go out, I am often thinking about going home and back to my bedroom.
In addition to bipolar depression, I have fatiguing illnesses, chronic pain (which is fatiguing) and some meds have sedating side-effects.
There's a lot of stress in my life this year, too.
I keep trying, keep tweaking meds, keep trying to think differently, etc.
However, the depression dominates, as does the fatigue. It's been a very long time now.
Hope you'll have better days soon!

WC