Facebook uses server-side permissions to control who sees what. When a profile is set to "Private," the data (photos, friend lists, posts) is only sent to users who have been approved as friends. No client-side "hack" can force Facebook's servers to send that data to an unauthorized user. Ethical and Safe Alternatives
: Websites or apps claiming to be "new" private profile viewers are almost universally scams or malware designed to steal your login credentials or infect your device.
If you want alternatives, I can help with: