[youtube] lMttqRuFmL8: Downloading webpage ERROR: Unable to download webpage: HTTP Error 429: Too Many Requests (caused by HTTPError()); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
In this issue, @dstftw explains that all IPv6 addresses get banned by YouTube.
--force-ipv4 should help. If it doesn't, the another workaround could be attaching a cookie from your browser with