Search their name on social media platforms
Check mutual friends’ friend lists
Use old school yearbooks, alumni groups, or class reunion pages
Search professional networking sites
Look through old phone contacts, emails, and messages
Ask family members or shared acquaintances
Search public records or online directories
Post in community groups or local forums
Visit places they used to frequent
Hire a private investigator if appropriate and legal
Respect privacy and boundaries
Leave a message through a mutual contact if you find one