Thank you @gohan !
In the end - it was wiring!
I first swapped out the NRF24L01 for another one - no good.
I then realized I wired the NRF24L01 to the Nano as if the Nano was a Micro Pro (as in the Micro Pro diagram - did I mention newbie?)
I fixed that but it still didn't work but...
I probably burned out the first 2 NRF24L01 boards because I then replaced with another brand new board on the new wiring and all is good,.
I think swapping NRF while still bad wiring just burned out additional boards.
I get it now - thank you.,