I am looking for a simple AI SEO service to grow organic traffic, any recommendations?

We're running an app for hair loss tracking and boosting hair growth, and we're finding it difficult to keep up with gaining organic traffic, especially when it comes to doing it via content marketing. We need something simple that can understand our business, identify the gap that's between us and our competition, and create the content for us (without sounding like a robot). It would be great if the AI could plan it too, that way it's one thing less to do. Any suggestions for a tool that does all this without being too expensive?