Sometimes it's hard to explain the homunculus problem / argument.
(Yes, there's no single part of the brain doing the thinking, because with that rhetoric a part of this part will soon do the thinking, so on and so forth.)
From now on, this webcomic page will make my life easier: https://falseknees.com/247.html
Some explanations that might not work so well, but otherwise are nice.
https://en.wikipedia.org/wiki/Homunculus_argument
http://pespmc1.vub.ac.be/HOMUNCUL.html
https://www.southampton.ac.uk/~harnad/Hypermail/Explaining.Mind97/0103.html