There are many reasons why people are being active in social networks, like Twitter, Instagram, Facebook, or Telegram channels. Some of them even have their own blogs or YouTube channels, like me. Some of them are having fun, but my primary objective of doing this and publishing my ideas online is that this activity helps me structure my thinking and make it more logical. I have thousands of censors constantly looking at what I'm saying and writing. You should do the same if you want to grow: start publishing your thoughts and see how many people follow you and read. If the number will grow, you have ideas. If not, well...
The video is here: https://youtu.be/CJ6oYeLGdmo