If your default search on Chrome is Bing, you can always switch to Google easily. Click the three dots in the upper ...

However, after a restart, if you notice that Bing is again added to the search engine list and Chrome automatically switches to it, then you will have to reset the Chrome settings to fix the problem.

Interestingly, you can also change your default search engine in Google's own Chrome app. Just tap your profile image to pull ...

So, if you are not planning to use Microsoft Search in Bing at all, it’s best to remove the extension. Once uninstalled, it will never be installed again in a future update of Office 365 ProPlus.