If you are a student at a university, check with your engineering department. Most schools provide free licenses or remote access to CATIA workstations for their students.
If you are looking for free or low-cost access, consider these official options: catia v5 cracked version free download
If you are a student or hobbyist, there are official ways to access CATIA without resorting to cracks: CATIA V5 Student Edition - Dassault Systèmes CATIA V5 Cracked Version Free Download: A Comprehensive
Most sites offering "free downloads" of CATIA V5-6R bundles package the software with malicious scripts. These can include keyloggers that steal your passwords or ransomware that locks your files until a ransom is paid. catia v5 cracked version free download