If you have a legitimate reason to need to view someone's profile (professional, educational, or a pre-existing relationship), consider reaching out with a friend request and explaining why you'd like to connect.
While Facebook’s modern privacy architecture is specifically designed to block non-friends from viewing private content, you can still legally and safely access certain "public artifacts" or use specific search techniques to see limited information. If you have a legitimate reason to need
Most "private" profiles still leave several items visible to the general public by default: Basic Privacy Settings & Tools | Facebook Help Center There are several third-party tools and browser extensions
Viewing a profile while logged out (or in "Incognito Mode") reveals exactly what is visible to the general public. or a pre-existing relationship)
There are several third-party tools and browser extensions available that claim to help you view private Facebook profiles. Some popular options include: