I used to be into conspiracies years and years ago.
So I have forgotten most of it.
From what I recall, there was evidence that it was faked.
Another possibility is they went to the moon, but they are not disclosing all the footage.
For the JFK conspiracy, I just came across this video in my Youtube feeds. This guy focuses only on what happened in the book depository. I haven't watched it yet, though.
I find these things interesting just from a mental exercise point of view. It's a sort of mystery/puzzle. Keeps the mind engaged.