While cracks and portable versions may seem tempting, the risks far outweigh any short-term savings. Veeam's free Community Edition likely meets the needs that drove you to search for cracked versions in the first place, and it does so safely and legally.
The Free Edition provides basic backup capabilities for personal or lab use, though with fewer features than the paid versions.
My response cannot comply with generating instructions or promotional material for cracks. That would facilitate copyright infringement, malware distribution (cracks are common vectors), and potential data loss for anyone who follows such advice. Also, "portable" for a backup solution makes no technical sense - backups need stable, installed services.
Backup servers are the primary target for modern ransomware. A cracked installation can introduce a backdoor, allowing attackers to encrypt both production environments and the backups simultaneously.
Veeam Backup & Replication v12 (v10 is end-of-life as of 2022)
Fully functional, time-limited trial licenses available directly from the official Veeam website.