Ok I'm going to start off with just some routine facts.
NASA claims that it has sent humans (astronaughts) to Earth's orbiting moon, and back to Earth. Six times in total (I think?)
No other group organization or country has duplicated this. Also, NASA has never done it again after the first program ended. Or has never made the claim.
No other group organization or country has independently verified that NASA has sent humans to Earth's orbiting moon and back. This fact will be my main point in disbelieving the NASA claim it has sent humans to the moon and back! Along with the fact that no one else has claimed to have done this.
Just to be clear, I'm not claiming that orbiting the Earth is a conspiracy. At night, just after sunset in a clear sky, I can usually find satellites when looking at stars. Back in the early 1980's, you'd be lucky to find a couple, now you can easily find a couple dozen in the same time!
I see no purpose in sending humans to the moon (and space in general). A satellite in space orbiting Earth, ya sure this has many purposes. One of which is to expand our awareness of Earth itself. But it comes at a cost!!!
What could have the US done with that money instead?