Just because there is no native installer doesn't mean your Mac hardware is useless for CATIA. Here are the three most reliable ways to get it running.
While there is no official Mac installer, users have successfully run CATIA on Apple hardware using workarounds, though these are by the developer. Methods to Run CATIA on Mac CATIA v5 on MacBook (Apple M1 & M2 for Engineering) is catia available for mac
Dassault Systèmes only officially supports Windows and some Linux distributions. Just because there is no native installer doesn't
While you cannot install CATIA directly on macOS, you can use these methods to run the Windows version on your Mac: CATIA v5 on MacBook (Apple M1 & M2 for Engineering) is catia available for mac