Open the Google app or any Google service
Tap your profile picture in the top right
Select Manage your Google Account
Go to the Security tab
Tap Your devices
Select the device you want to log out from
Tap Sign out
On a browser, go to your Google Account page
Open Security
Scroll to Your devices
Click Manage all devices
Select the device
Click Sign out
If needed, change your Google password to log out from all devices
Remove the account from the device in your phone settings if you want to sign out locally