First, it's recommended to create a Virtual Environment. So, to do that, and I'm assuming that you have everything that is needed on your machine, run on your terminal:
python3 -m venv venv
Then to activate your Virtual Environment, run:
source <path/to/venv>/bin/activate
Then to install all that is needed, run:
pip install -r requirements.txt
If everything worked, just run:
python3 main.py