Not doing anything wrong, different flavours for different folks. I tried Adguard Home but, found myself liking PiHole a little more. They're both excellent, and both are open source. I'd suggest, anyone that says AdGuard Home or PiHole is betterm, is as objective as saying "starberry is the most superior flavour of ice cream". :)

That said! I haven't used AdGuard Home in a very long time, might be time for me to revisit.