To confirm your Google account without the use of your old phone, you can access the Google Account Recovery page. This is how to do it:

Access the Recovery Page:

Open the Google Account Recovery page.

Enter Your Email:

Type in the email address used to sign in to your Google account and press "Next."

Try Different Recovery Options:

When you are asked to confirm your identity by using your old phone, press on "Try another way" until alternative options show up.

Use Backup Email:

If you have a backup email for your account, Google will send the verification code to your backup email. Verify from your backup email and input the code.

Answer Security Questions:

Google can also prompt you to answer security questions you created during the time you opened the account. Enter the correct answers.

Use Backup Codes:

If you have backup codes stored, you can use one of them to confirm your identity. Each code is only used once.

Approve Login from Another Device:

If you've signed in to your Google account on a different device, you may be prompted on that device to approve the sign-in.

Fill Out the Account Recovery Form:

If none of these measures succeed, you might be required to complete an account recovery form with information regarding your account and past activity. This serves to authenticate your identity by Google.

Carefully following these instructions and providing correct information will assist in the recovery of your Google account.