i have mistakely deleted files in Appdata of windows C and saved passords in Mozilla Firefox were disppeared, kindly suggest a proper solution to recover

If you deleted Firefox files from AppData, first avoid using or reinstalling Firefox, as new data may overwrite the deleted files. Check the Recycle Bin and any Windows backup/File History. Also check your Firefox profile folder for files like logins.json and key4.db. If you have a backup of the Firefox profile, restoring these files may recover the saved passwords. Otherwise, a file-recovery tool may be needed, but recovery is not guaranteed.