JFK Assassination Has Changed!! - Mandela Effect

This may sound completely weird to some but I do not remember seeing the JFK Assassination footage looking like this:

Granted, I was not alive when this actually took place, but back in 2000 I had a history teacher that was dedicated to solving the mystery of JFK. We would watch the footage over and over in class and he would randomly yell out "There had to be another gunman!"

In other discussions on this topic some claim that this false memory must have came from a documentary or a drawing or depiction of the assassination showing it wrong... but my memory is so vivid and comes directly from watching the Zapruder film. Yes, the Zapruder film has been proved to be edited, but I don't think it could have completely changed without anyone noticing?!

Here is what I remember:

1. The car was ONLY a 4-seater. There were only 4 people in the car. The Texas Governor and his wife were not there!
2. Head shot: I remember after the first shot his head slumped over and then another shot came in and blew a hole in the back of his head. Not the Right Side!
3. Jackie's reaction: I do not remember her grabbing his arm and then what looks like it could be shooting him since the new footage has the bullet exit coming from the opposite side of her.
4. I never remember Jackie ever being suspected of shooting him yet I see youtube videos and writings dedicated to questioning whether she did shoot him as she comforted him after that first shot.
5. The angle of the entire Zapruder film. I remember it being slightly farther away and more in front of the car when all of the shooting happened. This new one is too zoomed in and too much of a side angle.

What do you all remember?

Anything different than the current Zapruder film and different than what I listed?