Firefox is a web browser and not a search engine. A search engine is for example DuckDuckGo.com, Google.com, Bing.com, Yahoo.com etc. The company Mozilla (that makes the Firefox web browsers for desktop, iOS, Android) does not have a search engine of their own. https://support.mozilla.org/en-US/kb/add-or-remove-search-engine-firefox https://support.mozilla.org/en-US/kb/change-your-default-search-settings-firefox