World was corrupted, then deleted

Hello Crew,

   I don't remember what version I was on, but and I wasn't really focused on it and now I wish I looked at it before this happened. So recently I've been working on a survival world. I built a 9 block tall wall that took up a lot of resources and a lot of time was put into it. The wall, that surrounded our base, was around 100 blocks north, west, east and south. After a few hours on building the wall, I finally finished it and I was happy. I started to make some stairs to add a bit more details and for easy access. Then the power went out, but that didn't stop me and I was thinking how this happened before and everything was fine. But when I loaded Minecraft back up and entered my world there was a message that said, "Your world was corrupted due to x and y..." I was shocked and I didn't know what to do. There were two options "Ok" and "Cancel." So I pressed "Ok" and my world just vanished. I tried watching a lot of videos on how to get deleted worlds back and it brought me to tears because I worked so hard on that world. Now everything is lost and I don't know what to do to get it back. Is there any possibility to get my world back? It would mean the world to me. I don't have a picture to prove what happened because I wasn't expecting this outcome. Please let me know what you guys can do to help this world come back to life 😞