When I open Firefox, can I use the search bar in Firefox?

Firefox is a web browser while the Google you are seeing in Firefox is a search engine. A search engine is for example qwant.com, duckduckgo.com, google.com etc. https://support.mozilla.org/en-US/kb/change-your-default-search-engine-firefox-ios https://support.mozilla.org/en-US/kb/enable-or-disable-search-engines-firefox-ios Mozilla the makers of the Firefox web browsers does not have a search engine site of their own.