Restore items from SharePoint Online and SharePoint Server site recycle bins
You can restore items you delete, and items other people delete (as long as you have permission to edit the items).
Click Recycle Bin in the Quick Launch bar on the left of the screen.
If you don't see the Recycle Bin on the Quick Launch bar, follow these steps:
Click Settings , and then click Site Contents.
The Recycle bin is in the top right portion of the Site Contents page.
Note: If you don’t see a Recycle Bin in SharePoint Servers 2016 or 2013 — the Recycle Bin might have been disabled. Talk with your farm or server administrator. If you're an administrator, see Configure SharePoint Recycle Bin Settings.
On the Recycle Bin page, click the box to the left of the items or files you want to restore.
Click Restore.