Having got a bugreport from the Android device (Steam Deck OLED), it seems that there’s a bug in the x86_64 (64-bit) build but it’s packaged as a x86 (32-bit).
FWIW, I used chkbugreport tool from Sony Xperia to do this.
Main error (I think)
11-23 11:05:45.429 10169 11895 11895 W ang.minecraftpe: Unexpected CPU variant for x86: x86_64.Full log attached
This is a bug report though. It doesn't work on x86_64 architecture and some other Android devices do have x86_64 CPUs.