I don’t want to keep on clicking one bye one, how can i download all at once?
you can safely use Yt-dlp, it suits your need
How do you download a single video?
yt-dlp as the first choice. if you think the method hard, you can try easeus video downloader free trial. it helps you download all videos at once.
my usual suggestion will always remain Yt-dlp, it’s excellent for that