r2m:
I use the standard rf24 library (GitHub - nRF24/RF24: OSI Layer 2 driver for nRF24L01 on Arduino & Raspberry Pi/Linux Devices) with this example code (Only changed ce and csn leg numbers):
It will be easier to help if you try the examples in my Tutorial as I am more familiar with them.
Your photo does not show how you are powering your Arduinos and nRF24s. I'm not sure that the Nano's 3.3v pin is capable of powering an nRF24.
And it does not seem as if you have 10µF capacitors across Vcc and GND for the nRF24s
...R