Trouble with downloading on Mac

[ScrollDownPlease]

First, thank you for creating this program. I'm currently in the process of figuring out how this works. I've only started to learn Python very recently (on my own), and this is all still new to me

I'm currently following the instructions on how to install this on MacOS, but I'm stumped on number 2:

2. Install the requisite dependencies.
   pip install -r requirements.txt

Whenever I run this on my terminal, and on VSCode, I get the same output:

zsh: command not found: pip

Any help on this, and what it means? Much appreciated 🙏