This bit of text should give you a good hint as to why this error is popping up:

 You may restore the old behavior of pip by passing
    the '--break-system-packages' flag to pip, or by adding
    'break-system-packages = true' to your pip.conf file. The latter
    will permanently disable this error.
    

Installing python packages and raw digging them on your system used to break python based system dependencies quite a lot back in the day.

https://jairoandres.com/python-dependencies-break-your-system-if-you-want/

Just use a venv:

https://docs.python.org/3/library/venv.html