Crash when i come back on

So sometimes i have this crash happen when i turn off my device while still in Minecraft and i come back on and it just stays frozen for about 7-10 seconds and then crashes. Im unsure why it happens but its annoying to me because I frequently turn my device off to go do a chore or something real quick and it chrashes when i come back on. It doesn't happen 100% of the time but it happens pretty often. I hope you can find a solution! Thx