Firefox Focus is a web browser as a search engine would be for example duckduckgo.com, google.com, bing.com etc. The company Mozilla does not have a search engine of their own. https://support.mozilla.org/en-US/kb/change-your-default-search-firefox-focus-android https://support.mozilla.org/en-US/kb/add-search-engine-firefox-focus-android https://support.mozilla.org/en-US/kb/remove-search-engine-firefox-focus-android