GAME CRASH WHEN STARTING MCPE OR ENTERING A WORLD ON A SECOND TIME

So im having issues with my minecraft when i downloaded mcpe in playstore for the first time it was okay when booted up second boot of the game it crashes about 60% if booted in loading screen was succesfull when i entered a world for the second time it crashed no matter i restart it(BETA)also this happend in below versions thats making me mad