Do you have multiple Google accounts and want to change the default one to another? It requires a little bit of work, but you can do it.

The default Google account is the one you first signed in to on computer . The same rule applies to devices Android and many Google apps.
First, you can quickly see which of your accounts is the default by going to Google and clicking on the profile icon in the top right corner. You’ll immediately see a list of all the accounts you use. If none of these accounts say “Default” next to them, then you’re already using the default Google account.
As mentioned earlier, the first account you signed in with is the default. Therefore, you need to sign out of all accounts and sign in again with a different account. Follow the steps below:
Go to google.com and click on the profile icon in the top right corner.
Then, select “Sign out of all accounts.”.
If you are signed in via Google Chrome, you will see a message saying that syncing for your account has been interrupted. Click the “Continue” button to continue the process.
Now you can sign back in with the Google account you want to be the default from now on. Click “Sign in” from the top right corner of the Google homepage.
You'll see a list of all the accounts that were previously logged in. They'll have "sign out" next to them. Choose the one you want as the default, or click "Use another account" to log in with a new one.
One might say that it is not the best method to change your default Google account but it brings the desired result.
Source: Howtogeek
