The special effects of the 1960s were far less sophisticated than those today. From our perspective in 2018, it’s very obvious, for example at the 1:40 mark of this clip, that a heavily-laden astronaut depicted as being helped up from the Lunar surface by a fellow astronaut in one-sixth gravity is actually being raised to his feet through the magic of wire work, a special effects technique now much improved. Wire work in Chinese Kung Fu and Hollywood action films has since become quite seamless and audiences would demand their money back, if treated to such shabby SFX in a film today!
We also see unedited footage of the Apollo 11 crew in a reel sent by mistake to the creators of this documentary. Michael Collins, Edwin Aldrin Jr. and Neil Armstrong are shown with exceptionally clear audio discussing the techniques used to achieve a realistic depiction of the Earth at a distance, in order to falsely demonstrate the position of their module in relation to it.
Regardless of whether or not NASA succeeded in sending men to the Moon in the 1960s, there is major evidence that films of Apollo astronauts in Outer Space and moonwalking were produced using elaborate special effects, as are shown in this video.