Don’t delete, you lose your saves.
You update by downloading the new version’s APK and installing it as an update.
If you delete the app you lose your saves, unless you backup them which is a bit more complex.
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It should work the same as when you installed it the first time.
Though, Android often likes to have extra space to install things.
Sometimes, people get better results if they install using SAI (Split APK Installer).
Since it at least shows you why the install failed. Instead of just telling you it did.