How to Avoid Having Your Google Account Deleted
Google has a policy of deleting inactive accounts after two years of no activity. This means that if you don't sign in to your Google account for two years, all of your data will be deleted, including your email, files, contacts, and settings...
enable two-factor authentication
how to keep yourgoogle account active
set up a legacy contact
set up a recovery email address
sign in to yourgoogle account
use yourgoogle account for something