GMB and FB ads CTR

Does anyone have experience running FB ads to your GMB? I know of some blackhat techniqes using the keyword in the URL and I tried it but FB would not let me use that url or maybe I don't know how to do it right. I am thinking of just sending the traffic to the GMB share URL would this work?

Any insight or tip from people that have experience in this would be much appreciated.

Not sure if that will be acceptable from FB, but maybe you can setup a kind of redirect?
I mean: use link to your domain name in FB ads and adjust redirect from your domain name to your GMB.
Looks complicated though...