It shouldn't be "Why do some people believe Conspiracy Theories," but "Why do some people believe everything they're told?"

Sure, some people latch on to bad or even crazy theories, but there are all kinds of historical events that lack satisfactory answers and Authority is often unforthcoming or downright mendacious. If you're not suspicious of authority, you should be.

Sometimes it is just misdirection. Take our last presidential election. It was a close thing, and the closer it gets the harder it is to see what's true. Claims of voter fraud are down to specific situations and people, and the details are obscured and lost in the fog of war. People could debate all those specifics for the rest of their lives and never be satisfied they got to the bottom of it.

But the real elephant in the room is not shenanigans at the voting both but media and tech company behavior during the last few weeks of the election. Recall that important avenues of communication--namely Twitter-- boldly censored the Presisdent of the United states and shut up him and his most important supporters right before the vote. Google was openly censoring political speech on Youtube and manipulating their search results with abandon. The media deliberately suppressed important stories right before the election in a literal conspiracy to avoid saying anything which might jeopardize Biden's campaign.

Other times the lies are more direct and turned to much more serious matters, like assassination and war. The people who seek to rule us are not "normal" people and are capable of doing anything for power. The big, money losing media companies have people yapping on TV 24/7 for a reason, and it ain't to make money. Believe them at your peril.