Make sure to also add:
android:exported=“true”
to your GameActivity node like this:
Otherwise you might get this error while uploading to playstore:
You uploaded an APK or Android App Bundle which has an activity, activity alias, service or broadcast receiver with intent filter, but without 'android:exported' property set.
You can also manually add this tag in the manifest through an editor like android studio after the build, useful in case a old plugin which you don’t have access to isn’t using this tag.