Answer:
Press and hold the power button for up to 10 seconds, until your Mac turns off. If that doesn't work, try using a cellular device to contact Apple Support.
Explanation:
If that also doesn't work try click the following keys altogether:
(press Command-Control-Eject on your keyboard)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This makes the laptop (macOS) instruct to restart immediately.
Hopefully this helps! If you need any additional help, feel free and don't hesitate to comment here or private message me!. Have a nice day/night! :))))
<em>Another Tip:</em>
<em>(Press the shift, control, and option keys at the same time. While you are pressing those keys, also hold the power button along with that.)</em>
<em></em>
<em>(For at least 10 seconds)</em>
