Just tried this with VPN + firefox resist fingerprinting. I cleared cookies and session data and reloaded, it recorded 1 visit 1 ip for the first (obviously) and second tries. I did not change my VPN connection between attempts.

Based on this test I'm surprised Brave's fingerprint resister did not work for you. But on firefox the enhanced privacy protection (strict) and the resistfingerprinting option are two different knobs.