Some people might say you can't get DATA back. But that's wrong, you can't get OVERWRITTEN DATA back. The thing is, when you delete a file you only mark that data as deleted. Later on the computer can use that same data to store other files in, but the file is only deleted when the file's data is overwritten. And when you restore to fabric settings you format (delete) the whole disk. That means if you haven't installed any other things on the computer, you might have a chance to restore the file. There are many companies out there that can recover your whole drive, if you want that. But if you just want to recover you minecraft stuffs, you can use programs like Recuva or EaseUS that can recover them, mostly for free. EaseUS is a bit more powerful in my opinion as it can recover a whole partition.

ok thanks for the help guys, I didn't loose a huge amount just a chunk of annoying work I don't wanna repeat

Oh my, bad decision man, sorry to tell you but, it's gone

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If I'm reading reset correctly, it is impossible to get stuff back short of paid advanced data recovery that would give you corrupt data at best anyways.

Sorry, you're done unless you used a method that was designed to save certain bits of data (you said factory reset, so I wouldn't count on it). Even then, the chance is very unlikely that it saved minecraft files at any rate. Ya might have to accept GG on this one :/ I know the feeling as I recently had a USB get critically damaged with years of work on it, and all was gone in a mere day.

(2 hotfixed typos. Sheesh, can't I spell today ^.^)

You're boned, mate. MAYBE you can get them back from some deep core registry or something (I'm spitballing that, I really have no idea), but they're kinda gone, man. Sucks :/

Sorry to say but its gone... A Computer reset = Goodbye unsaved files.