I've search on the interwebs and the only thing I can find is legalese that I could not understand.
Can someone assist?
You can check this article: https://gdpr.eu/cookies/
But it basically states that you should give your users the possibility of opting-out from tracking cookies, like the ones used by Google, and this is not GDPR, this is ePrivacy. To comply with GDPR, you should give your users the possibility to see their data, delete the data, etc. Since this is done by Google, it is their responsibility to comply with GDPR, and not yours (more or less... Let's say, it is YOUR responsibility, but you offloaded it to Google, which is compliant with GDPR apparently).
In any case, you should ask yourself why are you giving Google your users' data. Aren't your server logs enough to see who visits you?