Does paid social media advertising yield positive returns? Or is it just a gimmick?

Depends on your needs, All these things are methods to solve a problem. But if you don't know the principle behind these, then you won't get any results. So the question is: What is my product solving? Whose problems are my product solving? Where are they having out, online and offline? What should I do to make them believe that I'm the best solution for them? How will they trust me? How to improve me visibility? How to improve my authority? Social media marketing can do wonders if you know the principle behind it, otherwise I'm pretty sure that it won't work. And 99% of the digital marketing company have no clue about what they are doing