I understand you're looking for a way to view anonymous Facebook profiles, but I should clarify that there is no legitimate tool or "viewer" that can reveal anonymous Facebook profile viewers.
Please note that these methods may not be entirely anonymous, and using them could still reveal your identity: anonymous facebook profile viewer
Result: You do not get the private photos. You do not get the viewer list. You just get a virus or a stolen account. I understand you're looking for a way to
Inaccuracy: Most "viewers" only show what is already public or cached. They cannot magically bypass Facebook's internal security to show truly private content. You just get a virus or a stolen account
Conclusion
📌 Key Point: Facebook explicitly states they do not allow tracking of profile visitors for any reason. Who views your Facebook profile | Facebook Help Center
While you cannot "spy" on others secretly, Facebook does offer specific built-in tools for your own privacy: