The Nano 3.3V regulator very likely does not have the current capability to power a rf24 radio module. Try powering the radio with a 2 AA battery pack (3V).
Images of code are nearly useless. We cannot copy the code to a text editor or IDE for examination or to run the code. Nor can we copy lines of code into a post. Read the forum guidelines to see how to properly post code.
Use the IDE autoformat tool (ctrl-t or Tools, Auto format) before posting code in code tags.