I am in the mac_changer code, and I was following the code correctly. The code did not perform correctly.
I noticed the subprocess.check_output was outdated from the version I was using, because the pyhon,org website sent a warning message! (very cool)
I went to the recommended update from python.org
noticed subprocess.run, and changed the code
Results that worked seamlessly for me
I am not sure what made this happen, I am using an older 2019 version of PyCharm. I put this here just in case it helps someone else with the same problem I was having.