There is no such thing as a free private profile viewer that works. Not one. Every single "free viewer" is a trap.
Every single website, application, or YouTube tutorial that promises to show you locked Facebook profiles is lying. Their only goal is to infect your device, steal your login credentials, or trick you into completing surveys that make them money. You will never see the private photos. You will never read the hidden posts.
A quick Google or YouTube search yields thousands of results claiming to offer software, online tools, or "secret methods" to let you view locked profiles, private photos, and hidden friends lists without the user ever knowing. These tools promise to bypass Facebook’s encryption, authentication layers, and privacy controls in just a few clicks.