Hi there and welcome
Can you try the following please
Open Keychain Access located in your Applications > Utilities folder from Finder
Select Passwords on the left.
Type an app such as facebook that you used before for saving its password ***** the search field on the right then right or control click the Facebook keychain then click: Get Inf then select the Attributes tab.
Click Show Password:
You may be prompted for your admin password ***** proceed.
Can you see the password *****?
ok, then they are permanently deleted, you will not be able to recover them sorry, this was the only chance we had for this.
I am sorry about this, and if you would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.