If you're unable to obtain a free DMDE license key or prefer not to use it, here are some alternative disk editing and data recovery tools:

Select your physical drive (not partition). Click “OK.”

This article explains:

from a selected directory, with no limit on the number of sessions. 7 Data Recovery Experts DMDE Official Versions Comparison

Finding a legitimate, "fixed" (pre-activated or cracked) license key for DMDE online is difficult and often risky. Security Risks