To connect an Xbox One controller to your Mac, you'll need to use a web browser to download the latest version of a program ...
So, you upgraded to an Xbox Series X or Series S after accepting that the Xbox One won't have new titles releasing. If you only have one controller for your new console, but still have your Xbox One ...
If your Xbox One controller is blinking, it could indicate that it's not paired to your console, which is usually a quick and easy fix.