Science Daily has a good short piece on conspiracy theorists and why they think "someone" is "responsible" for whatever it is that ails them.
https://www.sciencedaily.com/release...0925075108.htm
"These people tend to be more suspicious, untrusting, eccentric, needing to feel special, with a tendency to regard the world as an inherently dangerous place,"
"They are also more likely to detect meaningful patterns where they might not exist. People who are reluctant to believe in conspiracy theories tend to have the opposite qualities."
Then there's the 2 constant themes recurrent in every theorist's beliefs:
1. "The power held by heads of state is second to that of small unknown groups who really control world politics," and
2. "Groups of scientists manipulate, fabricate or suppress evidence in order to deceive the public."
and
"...if you are the type of person who looks out at the world and sees a chaotic, malevolent landscape full of senseless injustice and suffering, then perhaps there is a modicum of comfort to be found in the notion that there is someone, or some small group of people, responsible for it all. If 'there's something going on,' then at least there is something that could be done about it."