corrupted world

my world on Minecraft for PS4 (Bedrock edition) doesn't load I had a power outage and I lost my game I did everything I could to get it back downloaded the previous saves and deleted corrupted files I did everything I could my original save file was 968.0MB it's still in the PlayStation storage but it doesn't load that save when I try loading the world please fix this is was the first time I was enjoying Minecraft and my best friend made large fancy buildings and then everything got lost from the corrupt world.. also whenever I try joining the world I get a "error CE-34878-0" or "problem loading this world" I've checked and the Minecraft application the lasted version was already installed and I reinstalled Minecraft and I still had the problem can you please fix Gravesyard I did everything I could. (I think the version is v1.14.60? everything is updated..)