Run the downloaded file and follow the prompts.

Tubemate YT Downloader - Free download and install on Windows

If you prefer to stay within official app stores, consider these secure options:

TubeMate is inherently . Sites offering "cracks" or "serial keys" are often deceptive. They frequently package harmful software or "trojans" inside the installer, which can compromise your device or personal information. How to Install TubeMate Safely

The official way to download videos for offline play directly within the YouTube app.

Automatically converting video files into MP3 or MP4 formats for different devices.