DNS is one of the easier ways to track what people do on the internet. I wouldn't use Google DNS for this reason.
A Raspi running piHole and and Unbound is easy to setup following online guides and Unbound use the authoritative DNS servers so if these are down, the site is down for everyone.
DNS requests can also be secured so no one entity is tracking all your requests and selling them on.
OPNSense
PiHole
Unifi for Wifi