I no longer have a desire to deal with people

Now, THAT, I can relate to.
I haven’t experienced major clinical depression but I can understand the essence of what you say. To be honest though I didn’t experience it at your age. I’m 57 and have experienced it recently. Lack of motivation. What’s the point! Same old, same old..kind of feelings.
Like I need to refresh. Look at life with new eyes. Get back the awe and wonder of a child. Too much cynicism.
Well, hopefully you can snap out of it soon. Don’t be impatient might be my advice.