Change the email address for your account – Google Help

Step 1: Check if you can change it On your computer, go to your Google Account. On the left navigation panel, click Personal info. Under “Contact info,” click Email. Select Google Account email. If you can’t open this setting, it might not be possible to change your email or username. If your account’s email address ends in @gmail.com, you usually can’t change it. If you’re using a Google …

https://support.google.com/accounts/answer/19870?hl=en&co=GENIE.Platform%3DDesktop