Lock / Unlock Macro Having Issues with Sheet activation syntax

So I know that my sheet needs to be selected in order to lock or unlock but I keep getting errors on line #10 and I can't seem to figure out how I need to make each sheet active. I know the solution is probably incredibly easy but I wasn't able to figure it out :-(

Sub Lock_Unlock()
'
' Lock_Unlock Macro
' Locks or Unlocks Worksheet
'
' Keyboard Shortcut: Ctrl+Shift+L
    
Dim ws As Worksheet

     For Each ws In Worksheets <----------------------------------- Error here

        If Worksheet.Protect = True Then
        Worksheet.Unprotect Password:="cats"
        
        Else
      
        Worksheet.Protect Password:="cats"
        
        End If

    Next ws

End Sub