You need to switch to the proper account in the Play Store app (you may need to add the account under Settings -> Accounts -> Add account -> Google -> Existing, if you haven't done so already.)

Add or change your profile picture. Sign in to your Google Account . Under "Personal info," click Photo . Upload a photo from your computer or choose one of your Google Photos. Follow the instructions on the screen to crop or rotate your photo until you're happy with it. At the bottom left, click How do I change the email address used for Google Play Once your current email is invalidated, you should also be able to remove that address from your Google account and continue using your alternate email as the primary login. Change email for google play account-1. When reinstalling apps/ game reset and started all over. How to convert Google Play balance into cash - Quora Dec 17, 2019

How To Edit Google Play Gamer ID | Daves Computer Tips

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Changing Google Play Account on Kindle Fire | Amazon

Google Account Your Google Account automatically protects your personal information and keeps it private and safe. Every account comes with powerful features like spam filters that block 99.9% of dangerous emails before they ever reach you, and personalized security notifications that alert you of suspicious activity and malicious websites. How to change the main Google account on your Android phone May 23, 2016