Even if you find a video file, it will likely be terrible quality. Expect a 240p resolution, watermarked logos, audio that is out of sync, and mid-roll advertisements embedded into the video.
Since Locust (2014) is effectively lost to legal viewers, here are some excellent legal alternatives in the Hindi psychological thriller space that you can download legally via Netflix, Prime Video, or JioCinema (subscription required): Locust -2014- Hindi Web Series Download
These series are easily available for legal download within their respective apps for offline viewing. Even if you find a video file, it
Older, obscure files are a favorite hiding spot for hackers. A file labeled "Locust.2014.Hindi.Webseries.Complete.mp4.exe" is almost certainly a virus. Once downloaded, it can: These series are easily available for legal download