If the new update is unavailable after the game redirects you to the Google Play Store, follow these steps:
Close the game entirely.
Open the Google Play Store app.
At the top right, tap the profile icon.
Tap Manage apps & device.
Under Updates Available, tap See details.
Tap the Update button next to the app.
If the update is still not showing, it may not be available in your region yet. Once Google pushes the update to the Play Store, you’ll be able to download and install it. It may take a couple of hours for the update to be available in the Play Store.