Anyone experience post surgery Depression?

I had a minor surgery about 5 years ago, yet I'm still depressed, and I'm pretty sure it's from receiving anesthesia. I stopped feeling happy, lost all my friends, and don't care for anything anymore.
The immediate blackness and nothingness makes me think that's what I have to look forward to in death. If there's nothing, then why live at all.

Anyway, has anyone else experienced these feelings? How did you get through it?
I just want to feel like myself again.
Anyone experience post surgery Depression?
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