Face recognition search engines open to the public (PimEyes etc)

So there are now face recognition search engines that are open to the public. PimEyes is the most notable example, and more and more are popping up, such as facecheck.id. My concerns are twofold: what can I do for my own privacy and what can I do to help stop this on a society level (legislation, reporting GDPR breaches)?

For my own privacy:
I’m intrigued to use them on my own face to see what’s out there and then submit …

breaches etc face recognition gdpr legislation own pimeyes privacy public recognition reporting search search engines society