Minecraft Bedrock Edition on Android mobile crashes shortly after opening app.

Upon opening Minecraft on my Samsung Galaxy S8, I see a black screen for a few seconds. After that, the white background with the Minecraft logo pops up. After a few seconds, the app crashes and I am kicked out. This has been happening since 1.5.1 and is still happening on the latest Minecraft version, 1.5.1.2, and if you want to know how to do this, I simply open the app and everything happens on its own. I have thought about reinstalling Minecraft on my device, but I do not want to loose my worlds. Please help! Attached below are screenshots of what I see when I open the app (black screen, Minecraft logo, [and then it crashes]). Thanks.