Recover Lost Minecraft World Progress on Windows Desktop

I play Minecraft on my Windows desktop, and I had a world named "efso çağan" that I poured a lot of effort into. I spent a long time gathering wood and exploring, dug huge caves to reach the mines, found diamonds, built houses and mine tunnels, and lit up every part of those mines with torches. I even went to the Nether and tamed a Strider so I could walk on lava and keep exploring.

Recently, in 2026, I briefly changed the game's version and opened my world in that new version. When I loaded the world again after doing this, I saw that the world chunks had almost completely disappeared. Reverting to the original version and loading the world didn't change anything; my house, my mines, my torches, the areas I explored, and all my progress were gone. A large part of the world seems to have turned into an empty void, and almost everything I built has been permanently deleted.

I put hours of work into this world, and losing all my effort just because I opened it in a different version once is incredibly frustrating and upsetting. If possible, I want a restoration or recovery performed to bring back my world's previous state, along with the chunks and all my progress. I demand that my world be restored to exactly how it was before this glitch happened.

I request your assistance in recovering my lost world and progress.