Numeric keypad section of PC keyboard not working properly on my mini mac

My NumLock status light does not turn on/off when I press my NumLock key on my PC keyboard - Attached by usb to my new mini Mac M1. I have the latest software update macOSMonterey 12.1 The number pad works as if the NumLock key is on- that is I can type numbers. In fact I can only type numbers. I cannot type the non- numeric functions on the numeric keypad portion of my keyboard- e.g. the delete function key below the period button, the ‘Home’ function below the ‘7’ key, etc. The numeric keypad works properly when attached to a pc, but not my mini Mac. I’d like to be able to toggle the NumLock key on and off. It seems to be permanently set to the on position- even though the Num Lock indicator status is off. I’ve looked thru preferences and can’t seem to find a setting to fix this.