I have a question I'm playing Minecraft on my mobile phone but when I peeked in today was it gone?

Where is it and how can I get it back

First tell me what's gone.

My worlds

Look again in play store. You should then be able to install it again.

If you have Minecraft from illegal sources, I don't know what to do next.

Well, now that that's clear, maybe someone who knows more about Minecraft can help you. Without this information, however, it was hopeless.

You? Who? What? Where?

Not the app but the worlds

Try changing the file location in the profile settings

If they are not there, they would be deleted. Maybe one of your siblings will answer your cell phone.