I can relate. September is starting off only slightly better than August was for me. I'm still here though, despite my TRD. And I'm about to start treatment with Spravato in a couple of weeks, so that is a glimmer of light at present. If that doesn't help, I'll move on to Transcranial Magnetic Stimulation, or maybe Vagus Nerve Stimulation.
As for how you feel at present, I'm pretty much in the same boat all the time, feeling detached, disconnected, unloved, unworthy; you name it. The only thing that keeps me going is the rational mind I've cultivated, which helps me recognize the disparity between my perception and actual reality. It's not a perfect solution, but it's a good tool to have for people who suffer as we do. As you seem to operate on a similar wavelength, I have confidence that this storm of yours will pass.
In a bit of good news, that colorful painting of mine, which you might remember from my recent essay about depression, has been accepted into an exhibition in October. Fingers crossed that it sells.
Sentiti meglio presto, Jess.