After searching for you now know the truth: there is no safe, free, permanent download. But there is an excellent, affordable, and verified alternative.
A: On Netflix, each episode is about 300-500 MB in HD. Total ≈ 25-30 GB.
Amazon Prime Video holds the digital rights for Avatar: The Last Airbender in India. They offer the complete series with a .
While historically focused on English, select seasons or episodes may feature Hindi audio depending on current licensing in India. Verified Digital Purchase Google Play Store
If you absolutely need DRM-free MP4 files for a media server (Plex/Jellyfin), only download from private trackers or fan forums with a reputation for "Verified" releases.