Open your Google Account page or the Google app
Tap your profile picture
Select Manage your Google Account
Go to the Security tab if needed
Scroll to Your devices
Select the device you want to sign out from
Tap Sign out
Confirm the action if prompted
On a browser, click your profile picture in the top-right corner
Click Sign out
If you want to remove the account from a phone, open device settings
Go to Accounts or Passwords & accounts
Select Google
Tap the account
Choose Remove account
Confirm removal