Open the Google app or any Google service
Tap your profile picture in the top right
Tap Manage your Google Account
Go to the Data & privacy tab
Scroll to More options
Tap Delete your Google Account
Follow the on-screen steps
Enter your password if prompted
Review the information shown
Confirm account deletion
To remove a Google account from a device
Open Settings on the device
Tap Passwords & accounts or Accounts
Select the Google account
Tap Remove account
Confirm the removal
To remove a Google account from Chrome
Open Chrome
Tap the profile icon
Select Manage profiles or Sign out
Remove the Google account from the browser profile if needed