'pyinstaller' Is Not Recognized As An Internal Or External Command, Operable Program Or Batch File

So I made an app with Python and I want to make it an executable with PyInstaller, but the Command Prompt doesn't recognize the command. I've been searching the whole internet but

Solution 1:

you have to modify your PATH environment to include this:

C:\Users\username\AppData\Local\Programs\Python\Python36-32\Scripts>

if you don't know how to do it look here, good luck....