does firefox offer a firefox browser

Yes, it offers a browser: firefox.com/more/what-is-a-browser

No, it is not a search engine: blog.mozilla.org/en/uncategorized/internet-search-engine-browser

You can pick any of the built–in ones, or plug in any custom service you prefer: Manage Firefox search settings

Want firefox as a search engine and it never comes up as option to chose from as default browserI have downloaded firefox Beta

Firefox is a Browser to view internet sites. A search engine is used if you do not know the particular site you want to view.

If you know the site i.e. mozilla.org you can type that in the address bar.

Nowadays the address bar usually has a dual purpose and acts as the text box to search the internet, which search engine you use is up to you.

Bonjour

https://support.mozilla.org/en-US/questions/1603732

Add or remove a search engine in Firefox https://support.mozilla.org/en-US/kb/add-or-remove-search-engine-firefox

Want firefox as a search engine and it never comes up as option to chose from as default browserI have downloaded firefox Beta

As said Firefox is a web browser whether on Windows, macOS, Linx or as a mobile version for iOS/iPadOS or Android.

A search engine is for example qwant.com, duckduckgo.com, google.com, bing.com etc as Mozilla the makers of the Firefox web browsers does not have a search engine of their own.

Firefox Beta is a developmental channel for testing as there can be multiple updates as there were five builds for when Fx 155.0 was on Beta channel before 155.0 it was moved to Release channel.

Bonjour

Ajouter Mozilla Support Firefox n’a pas pu installer le moteur de recherche

https://support.mozilla.org/en-US/questions/1591336#answer-1830391 You can try https://support.mozilla.org/en-US/kb/add-custom-search-engine-firefox Add a custom search engine https://support.mozilla.org/en-US/search?q=%s in Settings