Every Android app has a unique application ID that looks like a Java package name, such as com. If you want to upload a new version of your app, the application ID and the certificate you sign it with must be the same as the original APK—if you change the application ID, Google Play Store treats the APK as a completely different app. So once you publish your app, you should never change the application ID. Your application ID is defined with the applicationId property in your module's build.
2. Rename app by creating a shortcut
1. Use Nova Launcher app