I want to block ads and trackers on the whole home network. I’ve been using adblockers and trackers for years now; I currently have a Raspberry Pi. I was thinking of setting up Pi-Hole with AdGuard. Any other suggestions are welcome. (I can’t use a custom router, because my ISP doesn’t allow it)
I second your idea of going with Pi-Hole. It is purpose-made for this and easy to setup.
Plugging my favorite block lists: