Thanks for the updates
To hit a couple of the points you brought up;
There is no way to change where the files are saved, but they are all save to the device, it shouldn't be save to the cloud. If anything does get saved to the cloud please let us know
In terms of the crash you experienced, the iPhone 11 has 4gb of RAM, so it should never crash due to memory issues (even if you haven't closed anything in the background). It's more likely related to something else related to the specific scenario you encountered. If you have a trace file from that game, that would be super helpful. Otherwise please let me know if it happens again