I ran into too many problems with pihole breaking sites so I just turned it off.
via https://v.firebog.net/hosts/lists.php which also describes 'Whitelisting Suggestions'.
Alternative: https://github.com/jacklul/pihole-updatelists
It certainly DOES let through a few more trackers, but that's the cost of a list that doesn't cause problems.
Use a better block list (OISD has been mentioned already), or use NextDNS. Neither of those cause breaks in most sites and stop the most bothersome/prevalent ads.