Arduino NANO Reset Pin & Ground

I need one more ground pin for a project, I have a few digital pins left empty but no grounds availale...

Can I sacrifice digital pin 7 to reassign a new ground?

thanks in advance

The digital pins have a maximum current they can sink. If you're just powering a sensor or something small that requires less than 20mA then sometimes it is a good idea to just digitalWrite(New_Ground, LOW); for that pin.

But why can't you just join two wires to wire to a proper ground?