Searxng is MUCH more private and than most other search engines but the vanilla version hides the search queries. Priv.au is a fork of searxng with search queries so it solves that issue. I am proposing it being added as an option in the search engine list for people who want to use an open source and private search engine.
Searxng is highly customazible within its search engines, with other basic features like safemode, ui changes, and being able to use bangs. idk of other browsers/apps support the engine