/etc/hosts on MacOS

cd /tmp
wget https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
cat hosts | grep -v 'googleadservices' | grep - v 'ad.doubleclick.net' > /etc/hosts

AdGuard

Add to AdGuard

https://raw.githubusercontent.com/rsnodgrass/dns-blocklists/main/adblock/personal-rules.txt

My Recommended

Read all about HaGeZi's blocklists.

Sync Config

AdGuard Home Sync can be used on replica instances to synchronize all configuration from a primary AdGuard instance. This enables running AdGuard in more of a high-availability model.

This can also be used to synchronize config between several sites so only one has to be configured and all others can follow along. Another optionn is to use keepalived with virtual IPs (VRRP).

For static IP DNS resolvers, consider x.x.x.53 (or .51/.52).