Why no, I’ve never done literally any research on this topic, but I’m pretty sure I’ve cracked this mystery.
I’ve heard a theory that a secret service agent riding in the car behind him was hungover and accidentally pulled the trigger of his gun and hit Kennedy as the convoy went over a bump in the road which would be hilarious but seems incredibly unlikely.
That one’s kind of the :grill: -pilled JFK conspiracy because it’s kinda nonpartisan, but at the same time it assumes that they just picked Lee Harvey Oswald at random as a patsy hours to minutes afterward.
This theory is usually combined with the official story as well. It’s not that the secret service just did it while going over a bump but he grabbed his gun in response to the original shot from Oswald and then also shot JFK.
This explains the magic bullet element of the case to a certain extent.