I tried to install python on my windows machine to run python scripts and install packages with pip install. i installed python and added the python folder to the PATH variables
cmd also seems to recognise the keyword python, but when I want to execute something, I only get the message:

cmd:
C:Usersuser>python -version
Unknown option: -e
usage: python [option] ... [-c cmd | -m mod | file | -] [arg] ...
Try `python -h' for more information.

when I try to install pyinstaller with pip install pyinstaller
i get the error message:

The command ‘pip’ is either misspelled or
could not be found.

Where is the mistake in my installation?