No technology was lost.
Going to the moon is very expensive, very far away and has no value now that the cold war with the Soviet Union is over. We can’t even balance the budget and Trump wants to cut taxes. During the Kennedy era going to the moon was a competition as to which country had the best space exploration. That’s over sorta except for Mars. Probably the first country to set foot on Mars will be China.
Going to the moon wasn’t a hoax. You can see trails left by the lunar rovers and reflect lasers off the reflector left behind just for that purpose. We can’t hide anything, even from Wikileaks, what to speak of a faked lunar mission 9 times over. The biggest hoax is the hoax theory itself.
Since President Obama the focus has been to go to Mars, but the moon is not out of the picture. NASA intends to harvest rocks from a nearby asteroid with a robotic spaceship, and then orbit that spaceship around the moon. They then plan to have a manned mission to orbit the moon, rendezvous with that robotic satellite and bring some of those asteroid rocks back to Earth for examination.
In the meantime, we have satellites orbiting and mapping the moon in detail.