Apps freezing and crashing on i Phone falls into the category of common issues.
You visit the App Store, find the app you want, and download it.
These old smartphones have not much memory, so that is why I assume a Google update is the problem.
The Google services take up to 80% of the available memory.
To check how much storage your device has: The problem could be caused by an app that you downloaded.
To see whether a downloaded app is causing the problem, you can restart your device in safe mode.