Your is the device your computer automatically selects to handle a print job unless you manually pick a different one. Having a default set saves time by skipping the "which printer?" step every time you hit print. How to find your default printer
Turn the "Let Windows manage my default printer" toggle. what is my default printer
I cannot provide the name of your specific default printer without direct access to your system. Your is the device your computer automatically selects
Modern operating systems often try to "help" by automatically changing your default based on your location or most recent use. Windows: Turning Off Automatic Management what is my default printer