There is a search engine bar at the top of the browser beneath the tabs. Click on the left side button, and a drop-down menu will appear. At the bottom, click on “Manage Search Engines...” A small window will open that allows you to add or delete anything from the list of search engines.
The very first thing I do when I get a new computer is install Firefox and delete the Google search. Then I get Firefox’s ad-blocker add on that automatically blocks “Google analytics.”
Did I get ya?