I accidentally uninstalled one expansion of the game (apartment life) and I lost my families,saved games and screenshots..I remember that I had a folder where my lots were saved and this files were in a format SIMS2Pack a format to install lots, but this folder has been deleted, it is possible I retrieve this folder for me to be able to reinstall my lost places?
if I restore my system, I can find it again?

thanks

System Restore won't work and might make matters worse by overwriting it..

Get Recuva. One of the best file recovery tools I've ever used; if anything can dig it up back, Recuva can. And in the future, backup frequent and often.

the files is corrupted, but I appreciate your help, thank you so much

Yeah, I was afraid that'd happen. The longer you wait before attempting recovery the greater the chances a bit of it will get overwritten by something else. Install Recuva before you need it.