make firefox prefered browser

Note if you are seeing Google in the Firefox web browser then it may just be as a search engine. See https://support.mozilla.org/en-US/kb/change-your-default-search-settings-firefox on how to change to another search engine in Firefox if you do not want to use the Google search engine in Firefox.

Hello To complement Add custom search engines in Firefox https://support.mozilla.org/en-US/kb/add-custom-search-engine-firefox Add a custom search engine in Settings (e.g) https://support.mozilla.org/en-US/questions/1591336#answer-1830391 https://support.mozilla.org/en-US/questions/1591482 https://support.mozilla.org/en-US/questions/1590161#answer-1828945 https://support.mozilla.org/en-US/questions/1584629#answer-1828295