Directly viewing photos on a Facebook account set to "Private" or "Friends Only" without being friends with the user is not possible through any legitimate built-in feature or "fix". Facebook's core security model is designed to prevent data from being returned to unauthorized users.
The Loophole: If the target user was tagged in a photo by a public figure or a business page, that photo was visible to everyone—even if the target later made their profile private. view private facebook photos without being friends 2021 fix
Some "white hat" methods discuss context clues rather than direct viewing: Directly viewing photos on a Facebook account set
Facebook’s Graph API once allowed advanced search queries like photos?type=tagged&userid=X. This let you see photos a user was tagged in, even if their album was private. Facebook deprecated this feature entirely by early 2020. As of 2021, public Graph API searches return extremely limited data—only from public posts or friends. Part 4: What About Social Engineering & Other Loopholes
: If a user's story is set to public, you can view it without being friends; however, the user will see a count of "Other" viewers. Security Warning: "Private Photo Viewer" Scams