Truth: Avatar is legally available in 4K HDR on Disney+ and Apple TV. Isaimini cannot host a "better" exclusive because they do not have access to studio masters. Any 4K copy they offer is a compressed, re-encoded file inferior to the legal source.
Truth: While a VPN hides your IP address, it does not protect your device from the malware coded into the pirated file itself. Furthermore, if the VPN logs data (many free ones do), you are still vulnerable.
This demand has led to a surge in search for specific pirate keywords, one of the most notorious being: