I want to connect a arduino nano as a controller to my arduino uno with NRF24L01 on both ends but cant find anything on how to do this.
You can't find anything on how two Arduinos can communicate with those radios? Bull shit. Sorry, to use those words but it is deserved here.
This has been done to death. There are tons of examples. Search the web. Search this forum. It's been done over and over. There is sooooo much info out there on how to use those radios it's ridiculous. If you haven't found anything it only means you haven't looked.