First, open the Settings app on your phone and go to the "Passwords & Accounts" (or similar) section. Select the Google ...

Google is changing its default settings to automatically delete some of the data it collects ... For example, if someone uses Google Search to ask if their account is secure, a box will appear ...

Another reason could be that you've created a new Google account and no longer wish to use the old one. Instead of resetting your phone to factory settings, simply remove the old account and add ...