I've been exclusively using DuckDuckGo until recent controversies, then switched to Metager. It is a privacy-oriented, opensource metasearch engine and they aren't relying on bing/google search results like almost every other search engine.
Results are really good and consistently relevant. But it has some minor annoyances, and recently metager started locking more and more features behind a paywall. I'll keep using it if I won't find better alternative.