Custom Neighbourhoods are gone pls help :(

Hey guys!

So recently I wanted to back up my sims 2 files onto a flash incase my laptop crashes as it has been faulty recently. However, like the idiot I am, I accidentally MOVED the files onto the flash instead of copy and paste.

But somehow, my game still launched like normal with my custom neighbourhoods being in there, despite half of the files being missing.

I went onto chat gpt and it told me to just copy and paste the files from the flash on the original files on my laptop. I did this and launched the game, only to find out that its now a clean slate and my custom neighbourhoods are all gone.

My custom neighbourhood files are still in the neighbourhood folder, but it is no longer on the game, the game has completely started anew. What can I do?