I've noticed that some ads aren't being blocked. It's possible my lists aren't enough anymore. Any suggestions?
Before adding too many lists, try to find out what domain is serving the ads.
If the ads are coming from the same domain as the content, Pi-hole won't be able to block the ads without also blocking the content.
If the ads are coming from different domains, then you can search for lists that block these domains, or you can simply add the domains to Pi-hole's domains list.
For what's it worth :
I feel like a lot of lists have become less strict and a lot of websites have also changed how they work when it comes to ads and tracking over the years and that the statistics clearly show that in the Pi-Hole webGUI the last year or so...
Simple example :
The Google Shopping links work different now and the old discussion about blocking or allowing them is now totally irrelevant! 