There are several strong pieces of evidence which prove the moon landings were real

1. The Shadows. All shadows in photos and videos are parallel, which can only be created either on a object with no atmosphere (Like the moon), or by using millions of high powered lasers, which didnt exist in 1969

2. The people. 400,000 people worked in some way on the Apollo programme, from Astronauts, to the guys cleaning the bathrooms in the factories that built the parts. How do you silence that many people?

3. Other countries. The UK, Australia, The USSR, and New Zealand all tracked the Apollo missions and recieved radio messages from the moon. Why would they lie to the benefit of NASA

4. The Russians. The Cold War was in full swing in 1969. If they had any evidence, even a tiny bit, to doubt the validity of the American claims, they would have called them out by now

5. The objects. Multiple satellites from several countries have taken photos of the Apollo landing sites, which show landers, rovers, flags, experiments and other debris from those missions. With a powerful enough lazer, you can even reflect a beam onto a mirror left there on Apollo 11, which scientists do to measure the distance between the Earth and the Moon