It may be okay if you download it for your personal offline use.
Why so? Because downloading videos from YouTube is not completely legal. But when it comes to downloading the videos from YouTube on your devices then it becomes a bit challenging. YouTube has its own way for link and video-sharing. There are many people who want to download videos that they like on YouTube and share with their friends, family. YouTube is a huge platform where tons of videos are uploaded and watched on a daily basis. Looking for ways to download videos on your mobile/computer devices? No worries, since that is what the most YouTube users and downloaders look for.