Minecraft keeps crashing without mods or packs in PE edition

When I go on to a world, my own saved or one on my LAN server, it starts to load then crashes. Minecraft PE doesn’t even detect the crash. I don’t use anything but the default resource and behaviour packs. What is causing the crash and how can I fix this?

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I have had this problem before. If the device you are using is an old model (5+ years old) Minecraft PE will not work well. Also make sure Minecraft is fully updated, the software on your device is also updated, and that you have a decent amount of available storage space on your device.