You can save your worlds in the Files app. Go to On My i[device]/Minecraft/games/com.mojang/minecraftWorlds and move the folder containing the world to your iCloud Drive or onto the On My i[device] folder.
I do not have any solution to the crashing problem though.
You can save your worlds in the Files app. Go to On My i[device]/Minecraft/games/com.mojang/minecraftWorlds and move the folder containing the world to your iCloud Drive or onto the On My i[device] folder.
I do not have any solution to the crashing problem though.