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. :)
the instrumentation reveals on the fly your action on various planes. So, much of this is not done via calculations, what is, is given the speed traveling how long do I need to thrust in X direction to achieve desired speed, for example. Stuff like that.
So imagine, along the way there, you are corrected and satisfied about approach and given current status remaining calculations are minimal.
https://airandspace.si.edu/sites/default/files/styles/featured_content/public/images/image-albums/LM-interior.jpg?h=01089232&itok=tIt2zXow