I am no tech bro, I am just an old retired bloke who enjoys using tech exactly how I want it to be.
I HAVE NO ADS ON MY PHONE.
How is this, that an old non techy can manage this seemingly difficult task.
First, I change. the DNS settings on my Pixel 4A and my families and friends phones.
Mullvad provides this as a free service for anyone not using their VPN.
I use the family filter on our phones: There are others.
family.dns.mullvad.net
https://mullvad.net/en/help/dns-over-https-and-dns-over-tls
secondly I install, either a Lineage or E/OS rom on our phones. Some of my family still use google apps so they prefer the E/OS roms which has microG.
easy peasy, no ads