Pioneer DJ changed its licensing model significantly after version 5. You can likely get what you need legally and for free:

: When you use a cracked version, you won't have access to official support, updates, or new features. This can leave you vulnerable to bugs and compatibility issues without a way to resolve them.

If you're looking for ways to use rekordbox without the full cost:

Downloading "cracked" software like "rekordbox 58 5 full crack new" poses severe threats: Security Risks : Crack files often contain malware, keyloggers, or backdoors

Rekordbox 5 does not support newer industry-standard gear like the CDJ-3000 or the FLX series . Why You Might Not Even Need a Crack