Search for "YouTube downloader" on Google and you find sites offering "free" software that installs three antivirus trials, a crypto miner, and a browser hijacker. Modern alternatives prioritize open-source code or web-based sandboxing.
Use yt-dlp "URL" or the excellent online tool cobalt.tools (no ads, open source, but single downloads only). youtube multi downloader alternative
yt-dlp -a videos.txt -o "%(title)s.%(ext)s" Search for "YouTube downloader" on Google and you