This study examines how young Douyin users navigate algorithm-driven short video platforms, emphasizing their sense of agency (SoA) in shaping engagement strategies. Based on in-depth interviews with 25 users, we identified four engagement statuses—High SoA Use, Low SoA Use, High SoA Nonuse, and Low SoA Nonuse—and two strategic transitions: Disengagement and Reengagement. These transitions illustrate users’ reflective processes regarding past behaviors and highlight deliberate efforts to regain control over platform use. Our findings reveal a complex interplay between user autonomy and algorithmic influence, highlighting the psychological mechanisms underpinning user-driven adaptations. By exploring users’ psychological coping strategies, this study positions user agency as central to fostering sustainable interactions with algorithmic platforms. By advancing our understanding of algorithmic engagement, this research emphasizes user autonomy and offers actionable insights into strategic adaptations, digital wellness, and algorithmic literacy, suggesting the value of mindful social media use.