Open the Settings app on your phone
Tap Passwords & accounts, Accounts, or Users & accounts
Select the Google account you want to remove
Tap Remove account
Confirm by tapping Remove account again
If needed, enter your phone PIN, pattern, or password
To delete the Google account permanently, open a browser and go to myaccount.google.com
Sign in to the Google account you want to delete
Tap Data & privacy
Scroll to More options
Tap Delete your Google Account
Review the information shown
Check the boxes to confirm
Tap Delete account
Sign out of the account on all devices after deletion