That won’t work. Is your board something like this?
If that’s it then take a look at:
Adafruit Feather M0 Basic Proto
That site will take you through the setup steps for the Arduino IDE. If you are using version 2 of the IDE then the procedure changes slightly (you select the Board Manager using the icon on the left instead of a menu option) but the selections will be the same. Once you have installed the required board definitions you will be able to select either the generic “Feather M0” or the specific model of your board.
