Just remember, anyone can get on Youtube and say anything. It doesn't mean it's true.
I don't just "believe" we landed on the moon--I know that we did. None of the hoaxers has ever been able to produce one piece of evidence that actually proves the landings didn't happen.
The first thing to remember is that things in low gravity or zero G, or in a vacuum, don't behave like they do on earth.
Second, the flights could easily be tracked by countries all over the world, including the Soviets. If they had even a hint that the landings were faked, they would have shouted it to everyone who would listen--but they didn't. They could measure exactly where the signals were coming from, and even measure the Doppler shift in the radio frequency, and the only way they could have gotten the signals from the location in the sky, at the frequencies they did, was if it came from a spacecraft on the way to the moon. The "time delay" is responses from the crew even proved that the origin of the signals had to come directly from the spacecraft.
There are actually pictures from the Lunar Reconnaissance Orbiter (LRO) that show the equipment left behind. In some of the shots, you can actually see the trails the astronauts left as they moved around. Directions and sizes of lunar features match perfectly between pictures that were taken from the surface, and where those things are in relation to the location of the descent stage of the LM (IOW, the only way those pictures could have been taken would have been from the lunar surface).
The engineers who built the spacecraft weren't idiots--they would have known if they were being asked to design and build something that wasn't capable of getting to the moon. That means that the gear was capable of making the flight. Why do that if you're just going to be faking the flight?
And here's something else to think about--there were 400,000 people who worked on Apollo. None of them--not one--has ever said "Yes, we faked it. Here's how we did it..." and then provided evidence. Not even in one of those "don't open this until I'm dead" letters stuck in a safety deposit box somewhere. What are the chances that 400,000 people could keep a secret for 40 years?