I’m immediately suspicious of anything that says “earn crypto rewards” so that’s a “no” from me.

I just use Searx-NG as my meta search engine, and it’s been pretty good.

There’s another self-hosted actual search engine (with its own dataset + crawler) but I forget its name off the top of my head. I’ve been looking into setting that up to experiment with.

Same, anything peddling crypto and implying the user may earn it through no actual work being done, is suspicious.

Searx-NG works well enough for me in 90% of cases, may not be perfect yet but if it keeps getting developed it will get better. I love those random redirectors that send you to a random instance, no centralised site you depend on then.