How to recover previous state

[etorres]

I have the latest backup on an external drive.
On the computer disk I moved some subfolders to the root directory. I have put these folders back where they were before doing the synchronization.
I have done the synchronization and I have lost almost everything from the computer disk.
How can I revert the last synchronization?
In C:\Users\Emiliano\AppData\Roaming\FreeFileSync\Logs I have the html of this synchronization with all the errors.
I need to return to the previous state of my computer disk.
Thank you.

[etorres]

In the folders in which there have been changes, it has only left the files created or modified after the last update, on both disks, although those on the external hard drive have only modified these folders, on the computer it has eliminated everything else.

[xCSxXenon]

As FFS does not take snapshots or remember 'states', there is no way to 'undo' in FFS

[etorres]

What is the recycle bin option in the sync options for?

[xCSxXenon]

When FFS deletes or overwrites, it puts it in the recycle bin if you have it set up that way.
If you need to restore anything from there, you have to do it manually, FFS can't do it for you

[etorres]

Thank you, I have used recuva that has recovered a large list of files in a folder