Issue on m1 Mac install.command

Hi,

Ive been trying to sort this out for ages and nothing seems to work. Ive uninstalled every single version of python and installed the new one, installed multiple versions. Done every fix i found on google. Still wont work

/Downloads/instapy-quickstart-master/installation/MacOs/install.command: line 3: [: !=: unary operator expected
Please install the latest version of Python from https://www.python.org/downloads/

Sorry for the inconveniences
====================
Pip is installed
====================
Chrome is installed
====================
Error! - Please double check the installation of Python, pip, and Chrome
Sorry for the inconveniences

Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[Process completed]

this comes up on install.command