most of the free data recovery software are functions limited. So I don’t recommend you to use some free data recovery software. But if you insist, here I will recommend you some
Recuva is a user-friendly Windows-based tool. When you run Recuva, you can resurrect missing files using either the file-recovery wizard or the application's manual mode.
2. Undelete Plus
Undelete Plus used to be commercial software but has gone on a lengthy "limited time offer" freeware run. This file recovery app works on all versions of Windows and incarnations of the FAT and NTFS file systems. Like Recuva, Undelete Plus assigns a recovery probability to files it finds based on how damaged the file is.
3. PhotoRec (Windows/Mac/Linux)
This recovery tool won't mess with your partitions or help you rebuild your master boot record; it will, however, dive into your disks in a safe, read-only mode and ignore partitions and file systems in an effort to seek out your missing files.
After you try these free data recovery apps, you will find that they are extremely limited, such as time limited, storage of recovered data limited, etc.