The short answer is no. Facebook has spent billions on security to ensure that when a user sets their profile to "Private," it stays that way. Most "free tools" you find online are either scams or phishing attempts designed to steal your login credentials or install malware on your device. Common Risks of "Free" Viewers
Malware & Spyware: Some tools require you to download an "extension" or "app" which can track your keystrokes and monitor your private activity. facebook private profile viewer free top
Q: Can I just use a second account to friend them? A: Creating a fake account to spy on someone violates Facebook’s Terms of Service. If caught, both accounts will be permanently banned. Additionally, "catfishing" may be considered harassment. The short answer is no