• Make use of a persons search engine.-If you don't know the person's exact Reddit username but have other information about him or her, such as his or her name, phone number, email address, physical address, etc., a reverse lookup tool like Social Catfish, Spokeo, or PeopleFinders Social Catfish is your best bet for finding the person's Reddit profile.
• Social Catfish is a powerful people search engine with one of the largest databases of public records, social media/dating site profiles, and background information available. It's the quickest way to find someone's Reddit page and other social media platforms, such as Instagram, Facebook, Tumblr, Tinder, POF, and so on.
• Go to Social Catfish for more information.. In the search bar, type the person's name and click Search Now.. Social Catfish will conduct a database search and provide a complete report that contains the person's contact information, family members, employment experience, social media pages, criminal background, and other information.

Read More: How do I find someone on Reddit through their real name?