Final approach --- landing on the moon, used no computers ---- completely pilot controlled.
They had a mechanical simulator --- with modified earth gravity (Flying Bedstead) for practice.
They got about 30 practice runs (Armstrong crashed one).
Then ---- then do a perfect landing the first time on the moon --- with different gravity.
OK ---- so simulate this, give only 30 practice tries, change the gravity settings and do it perfect.
Practice 30 moon landings with a simulator.
Change the gravity setting and successfully do it on the 31st try.
When Neil Armstrong did it, the final approach and landing were done "by the seat of your pants" --- there was no computer used. The de-orbit burn did use a primitive computer. The final approach and landing did not use a computer.
The craft was not flying (no air), it was translating.
There was no aerodynamic stability. - The was no aerodynamics.
When you successfully do it, post a screenshot. :)