I, like many of you, have read about everything there is to read about the assassination of U.S. President John F. Kennedy. I read the Warren Report. I have read the various books. I even endured the tiresome Oliiver Stone movie about it.
I always doubted the idea of a single gunman because it required a belief in the "magic bullet theory" and I have never been able to accept it. I always know enough about bullet wounds to know the Zapruder film shows the fatal shot coming from the front. Not a chance it came from the back, let alone from high up on the Texas Schoolbook Depository.
Consider this story of an audio recording detailing the hiring of a named guy, Mac Wallace, who allegedly was hired by Lyndon Johnson to kill, not just JFK, but others. Here's some incedible insight into Wallace (jaw-dropping stuff).
As for Johnson and his likely role in the assassination, there are books which go into great detail on the case which can be made. (Two books in particular ... here's one; and here's another.)
I'm not sure any of the files will have a thing on LBJ, but the evidence is compelling.
The bottom line is that the wounds don't lie and they tell some of what happened with an exactitude which is beyond practical doubt. Below is an interview with one of the Parkland doctors (I encourage you to trackdown ("JFK: What The Doctors Saw" on Paramount +). You will find it enlightening, especially in light of what we may soon learn (or not).
And this, if you have not seen it, is the Abraham Zapruder film. NOTE: This is not for everyone. It is the murder of President Kennedy captured on film and remastered.