The Firefox web browser from mozilla.org only comes as Firefox web browser. No version of desktop Firefox for Windows, Mac OSX, Linux from Mozilla has ever some with the completely separate Google Chrome web browser from Google as part of the download.

Perhaps you are starting up the Google Chrome web browse you already had installed on Windows 10 for some reason.

Or perhaps the Firefox web browser is indeed running but you are seeing the Google.com or Google.ca or whatever locale Google page in the Firefox window and think you see Google Chrome.

Also the web browser you used to post this question has a useragent of Firefox 92.0 on Windows 10 as you can see in your Question details > More System details on right of post.

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:92.0) Gecko/20100101 Firefox/92.0

Set the home page https://support.mozilla.org/en-US/kb/how-to-set-the-home-page