I am not able to run Python in Powershell

[The Cat Gamer]

fter I installed Python I try to open it in Powershell, by typing
python/python.exe.
It gives me an error:
python : The term 'python' is not recognized as the name of a cmdlet,
function, script file, or operable program. Check the spelling of the name,
or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ python
+ ~~~~~~
    + CategoryInfo          : ObjectNotFound: (python:String) [],
CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
This happens with version 3 and version 2. The newest versions and the
older versions none of them makes me able to open Python in Windows
Powershell. Are you guys aware of a fix?

(I already tried the environment fix and that didnt work as well)