Go to https://myaccount.google.com/
Sign in with the Google Account you want to use as the default
Click your profile photo or initial in the top-right corner
Select Switch account
Select the account you want to use as the default
Visit https://accounts.google.com/ServiceLogin?service=mail&continue=https://mail.google.com/
In Gmail, click your profile photo or initial
Select the correct account
If you don’t see the account you want, click Add another account and sign in
After switching, refresh the page
Set the default account in Google Search: open https://www.google.com/
Click your profile photo or initial and choose the account you want
If prompted for account selection on sign-in, choose the desired account and complete sign-in
In Chrome, ensure you’re signed into the correct Google account: open Chrome settings
Under You and Google, confirm the correct account is listed
If multiple profiles are used, open the correct Chrome profile and sign in to the desired Google account
For Android/iOS: open Google app or Chrome
Tap your profile photo
Select the account you want to be default
In device settings, confirm the Google account under Accounts is the one you want as primary