The Last Warrior: Root of Evil (2021), the best way to watch or download the film in 720p or higher is through official digital platforms. As a Disney-produced Russian fantasy film, its availability varies significantly by region. Official Streaming & Download Platforms
Conclusion
Check local subscription streaming services (e.g., Disney+ or Amazon Prime Video) where the film may be included or available for rent.
A Blu-ray edition is available, which often includes multiple audio tracks and high-definition quality. Google Play The Complete Trilogy