"ImportError: No module named requests"- Ubuntu 22.04 with Python3 and requests installed

[Oinkweil]

I'm a pretty novice Linux user, trying to grab my certificates. I'm on Ubuntu 22.04 with Python3 installed, which includes requests as part of the Python3 dist package.

Requirement already satisfied: requests in /usr/lib/python3/dist-packages (2.25.1)

I understood that certbun.py script is in Python2, so I've installed this. However, I come no further than:

sudo python2 certbun.py config.json
Traceback (most recent call last):
  File "certbun.py", line 2, in <module>
    import requests
ImportError: No module named requests

How could I get this to point towards the Python3 requests library?