PS4 Minecraft world gone?

My buddy crashed the PS4 while playing Minecraft (something because of external memory or memory expansion kp so I think because of its extra hard drive?)

And after that the world was gone

Can you get them back somehow?

So he hasn't started it for 1-2 days.

I think the world will be gone forever.

Fortunately, it was no more than 1-2 days old.

It seems to be gone. Fortunately, it was only 2 days