Thanks for the question, Krasen Hinkov.
Since the outcome of a sprint is to learn, the next step afterward is to apply that learning. If it’s your first sprint on a particular challenge you’re working on, it typically means your next step will be another sprint, or some kind of continuation of the learning process (additional testing, prototype refinement, new research, etc).
And then, even when you’ve learned enough to begin creating, you’re still learning and refining, forever.
Most people (including me) believe that a sprint is that quick thing you do right before building something, just to make sure your hunches were correct.
Instead, look at a sprint as 1 of many tools that will help you and your team learn together. Then consider if you still have the same question you asked above.