Open the Google app, Gmail, or any Google service
Tap your profile picture in the top right
Select Manage your Google Account
Tap the account menu or profile icon
Choose Sign out or Sign out of all accounts
On a browser, go to Google.com
Click your profile picture in the top right
Click Sign out
On Android, open Settings
Tap Passwords & accounts or Accounts
Select your Google account
Tap Remove account
Confirm the action