@shadow @V0ldek > What I’d really like to find is something like a pihole for search, where you have your blocklist, cache of things you’ve searched already (your own mini search engine?), and then a fallback engine (DDG, bing, Google, whatever) for things it doesn’t already know.

I think SearXNG sort of fulfills this, from what I've heard? It's more or less a self-hosted search engine that can combine indexes from various other engines, and I presume that means you can set your own rules and filters and such. There are public instances as well.