Logically, social networking apps imply social interactions, chats, and information sharing. Therefore, the back-end infrastructure should be planned with the intent to process lots of data.
There are also many subdued types of social apps like media sharing, apps for consumer reviews, communities, blogs, anonymous and interest-based networks, dating apps, etc.
Making a clone of the most widely used social products like Instagram, Facebook, or YouTube does not lead to greater success. These products have existed for years now and your social app simply cannot include all of their functionality.