Yeah, exactly as you pointed out… both can and probably will coexist.
In my case, I also have been coping with depression and anxiety, but in my case it’s derived from my borderline and schizotypal personality disorders (mods: I’m aware of the Rule 3 and this is just my life story). Ain’t no long-lasting friendship, no meaningful relationships, just a hunger for constantly seek knowledge, especially dark knowledge (for instance, I have recently been diving myself into the realm of occult practices, embracing worshiping of The Dark Mother Goddess Lilith). Conspiracies were part of this seeking for knowledge some time ago.
The overall human evilness is so clearly visible, and I’m well aware of it since my early age. As Hobbes said, the evil is intrinsic to the mankind, and some attribute to him the quote: “Homo homini lupus est” a.k.a. “the man is it’s own wolf (predator)”. World’s like the worsened version of Dante’s Inferno (because, differently from our world, that Inferno don’t pretend not being hell), and I found out that we’re powerless to our own shadows, the only solution is to hug and embrace the so-feared demons… literally.
Conspiracy theories are just ways that try to detail and explain the most intricate evilness behind the curtains, but one doesn’t even need to rely to conspiracy theories to see how world is not a beautiful bright fairy tale.