It is not possible to directly see who visits or "stalks" your Facebook profile. Facebook does not provide any feature or tool that lets users see who has viewed their profile, and any third-party app or service claiming to do so is likely a scam or harmful. However, there are indirect clues that may help identify potential stalkers on Facebook:

• People who frequently like, comment, or react to your posts, especially old ones, could be paying extra attention to your profile.
• Sometimes, Facebook's algorithm might show those who interact with you most in features like "People You May Know" or story viewers.
• You can see who views your Facebook stories, which is a limited way to track profile visitors.
• Monitoring messages, comments, tags, or unusual interactions can also help spot suspicious behavior.

For protecting yourself from stalking, it is best to tighten your privacy settings on Facebook, such as limiting who can see your posts and friends list, using tools like "View As" to see how your profile looks to others, and blocking or reporting users if needed. In summary, Facebook does not allow users to see their profile visitors explicitly, but interactions on posts and story viewers can give some indication. Be wary of apps claiming to show profile viewers as they may compromise your security.