If you just want simple ad blocking you don’t actually need pi hole for it’s web interface you don’t ever look at once it runs. Unbound alone can do the job with minimla configuration.

Nowadays I even changed my setup to dnsproxy, which doesn’t even need any config. It’s just a handful parameters when you start it. And it does all the filtering for my home network as well as providing DoH access for when I’m not at home and connected from somewhere else.