Open any Google page (e.g., Gmail, Google Search, Google Drive).
Click your profile picture or initial in the top-right corner.
Click Sign out.
If you’re signed into multiple Google accounts, click Sign out of all accounts.
If you don’t see the option, click your profile picture, then Manage accounts, then select the account and choose Sign out.
On mobile (Android/iPhone): open the Google app or a Google site, tap your profile picture, then tap Manage accounts, select the account, and tap Remove account or Sign out.
To sign out in all browsers/devices: go to https://myaccount.google.com/ , Sign in, then Security, then Your devices, then Sign out.