I've been running BIND9 on a raspberry pi powered off of a usb port on my wifi router. Sure 8.8.8.8 and 1.1.1.1 will know some of my households queries, but not how much they are being queried. It's actually surprisingly busy with redundant requests. Request that google et al know less about now.

It's also handy to review the DNS logs. I found out my off brand wifi cameras were phoning home to china every minute. Blocked that domain in a hot minute!