Respect people’s privacy. If they wanted you to see their content, they would add you as a friend.
If you are trying to improve the quality of your own profile images, you should upload photos with a width of at least 2048 pixels to avoid blurriness, as recommended by or perhaps trying to recover a lost account Lock your Facebook profile | Facebook Help Center fb private profile viewer extra quality
Beyond the technical and security failures, there is a legal and ethical dimension. Attempting to access a private Facebook profile without consent violates Facebook’s Terms of Service, the Computer Fraud and Abuse Act in the U.S., and similar cybercrime laws globally. Even if such a tool were to miraculously work, using it would constitute an illegal intrusion of privacy. The very desire for an "FB private profile viewer" stems from a misunderstanding of social media’s social contract: privacy settings are not puzzles to be solved but boundaries to be respected. Legitimate ways to view a private profile exist—sending a friend request, asking a mutual contact, or the profile owner changing their settings—none of which involve third-party software. Respect people’s privacy