"According to Anthony Lantian of France's Universite Paris Nanterre and his co-authors, people are drawn to conspiracy theories because of an underlying need for uniqueness. In other words, a need to be different from other people by embracing beliefs that are out of the ordinary. Just as this need for uniqueness can cause people to develop unusual hobbies or seek out experiences that set them apart from the crowd, conspiracy believers adopt unusual beliefs about the world that make them feel special or above average. Whether this involves embracing the "truth" behind political assassinations, alien visitors, the misdeeds of government officials, or "secret" scientific discoveries that ordinary people don't know about, embracing conspiracy theories can provide believers with a false sense of confidence over how the world "really" works."

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https://www.psychologytoday.com/sg/blog/media-spotlight/201708/what-makes-conspiracy-theories-so-appealing