SearXNG aggregates results from Google, Bing, DuckDuckGo and dozens of other sources without exposing your IP to them. When you host it yourself and expose only the .onion address, the operator (you) is the only one with access to query logs - and by default SearXNG logs nothing.
Whoogle is a leaner Google-only proxy. YaCy is fully decentralised. Pick based on your needs.