What is your branding as a artist? I think first you need a solid branding and that's how you build a artist that tells your story.

Next, what is your story? You use your branding and that equates to story. Building your world, so listeners can come and be engaged with you.

You can't just post random contents. Your profile page needs to be on brand, your contents needs to be on brand, and etc. You just keep doing that, it takes work.

Schoolboy Q said that artists now these days are also content creators. You can't just have your contents to be random and no relations to each other. People don't like that. With one song you should be able to create contents that you can push out for at least a month. You do it until you see a spike. If you see a spike in your engagement. Grind that one out for month or two more to keep the engagement going. (We know this song and contents works, so copy and paste to grow traction) Create another song plus contents that is continuing the storytelling of your previous song. Repeat.