Can I use Chrome Enterprise deployment to secure extensions on my child's Mac?

I want to 'force install' some extensions on my son's Mac (to limit access to sites), and was looking at [Chrome Deployment documentation.](https://support.google.com/chrome/a/answer/9020078?hl=en&ref_topic=7650028) I'm at a loss on the last step ... is there a way to install Chrome on his Mac with policies in effect, without paying for an expensive professional MDM? Unfortunately Apple's Screen Time does not work in Chrome (yet).