I Lost My Saves :(

I turned on experimental features and my game would not start. after a while i got it to go on but the resolution was at 800 x 600. When i tried to change it back to
1366 x 768 it would crash. I backed up my worlds, saves, and screenshots. I reinstalled the game after and went to put my worlds, saves, and screenshots in the files i got a
windows 10 error 0x80004005. Please help, i would appreciate any suggestions to fix my saves.

Thank you