There are many options available out there to download videos from Youtube. There are many downloaders that will let you download Youtube videos. I will suggest you some websites that I have been using to download youtube videos.
There are free Youtube downloaders that you can use to download Youtbe videos. These are the most common way to download Youtube videos. You can find a free Youtube downloader from any torrent website or reddit, copy and the URL of the video into the save field, and then choose what format you want to save in.
You can also visit "onlinevideoconvereter.com", an often used site for efffortlessly downloading from from youtube for free. It involves the same process, where you need to copy the URL of the intended youtube video, paste it in the black field, and click "download".