Replying to @Fearedminer
I'm sorry to hear that happened after all the work you put into it! Currently, fixing corrupt save data is not a service we are able to offer, but you can check out this online resource: minecraft.gamepedia.com/Tuto… (please use at your own risk). ^AS

Tutorials/Recover corrupted saved world data – Minecraft Wiki

At times Minecraft will hiccup and drop a saved world from the list of those available. The file is still there with the other saved worlds; it is just been corrupted. You can re-upload your...

minecraft.fandom.com

Jun 4, 2020 · 6:30 AM UTC