Moon Mission

Apollo 11 (July 16–24, 1969) was the American spaceflight that first landed humans on the Moon.

Now my Questions

1. 54 years since 1969 why has the US never been able to send any mission on the moon?

2. 1969 technology was at a very early stage. Today rockets have HD cameras and all communication, and the world has the best of computers and communication. Still, why is the US not able to send any Moon mission

3. With the best cutting-edge technology today, we still need years of planning to send any mission to the moon. How come US sent a man on the moon in 1969 with just a few months of planning?

4. Did the US really land people on the moon or it was cooked up to beat USSR?