Free YouTube Downloader

There are many reasons to download videos YouTube to your hard drive. Here are a few examples;
You do not appreciate ads and other distractions when you’re trying to watch a video.
You have a slow internet connection or you’re viewing HD video, which causes buffering delays while streaming video.
You want to make sure you don’t lose the video when it’s removed or altered by YouTube or by the author.
You’re only interested in a specific part of the video and you’d like to cut out any parts you don’t need.

Grab multiple videos in moments and save them in resolutions up to 8K

The installer is a little too keen on adding bundled software, but Free YouTube Downloader is very good and completely free. Its focus is on downloading rather than converting files from one format to another, so you get a good multi-stream download manager for grabbing several clips simultaneously.
It can download files of up to 8K resolution (in MKV) and convert to AVI and MP4. Remember that you should only download videos from YouTube if you have the copyright owner’s permission.