Part 5/11:
As Dark progresses, it seemingly leans toward validating the existence of free will. In the series' finale, both Jonas and Martha succeed in breaking the cycle, ultimately preventing the tragic death of H.G. Tannhaus's family, which eliminates the creation of their own dystopian realities. Importantly, this pivotal break happens when they make a different choice, suggesting that change is indeed possible.
However, this begs the question of what allowed them to choose differently in the end, especially considering that prior to this, they were mired in repetitive cycles. The core of this transformation can be traced back to the nature of the cycle itself: desire.