How do I change it back to Google without having to reset everything?
Click on the little arrow in the search box, and then choose Google as your search engine.
If the above doesn't work, try SearchResetThis is a simple Firefox extension that backs up existing values of the home page and keyword search preferences, and then resets them to their default values. It also resets the current search engine to the original default engine, and then uninstalls itself.
also, make sure in