1. Open the Google account login page and enter your account and password.

2. After logging in, click the "Data and Personalization" option on the left side of the page.

3. On the "Data and Personalization" page, find and click the "Download data, delete data or make a scheme for data" panel.

4. On this panel, select Delete Service or Your Account.

5. On the next page, select Delete Your Account.

6. Enter your account password for verification.

7. Read and check the relevant tips, and then click "Delete Account".

8. After completing these steps, your Google account will be successfully logged out. Please note that once the account is deleted, it cannot be restored, so please make sure that you have backed up all important data and made relevant preparations before performing this operation.