One of many possible solutions. This one no Javascript, no browser extensions, no Python, no libcurl, no "subscriptions", no BS.

      #!/bin/sh
      x(){ bssl client -connect www.youtube.com:443;};
      x(){ openssl s_client -connect www.youtube.com:443 -ign_eof;}; 
      read x;
      printf "%s\r\n%s\r\n%s\r\n%s\r\n%s\r\n%s\r\n%s\n" \
      "POST /youtubei/v1/player?key=AIzaSyA8eiZmM1FaDVjRy-df2KTyQ_vz_yYM39w HTTP/1.1" \
      "Host: www.youtube.com" \
      "Content-Type: x-www-form-urlencoded" \
      "Content-Length: 121" \
      "Connection: close" \
      "" \
      '{"videoId":"'$x'","context":{"client":{"clientName":"ANDROID","clientVersion":"17.10.35","androidSdkVersion":30}}}' \
      |x|sed -n "/itag=22&/{s/.*: ./<a href=/;s/\",/>$x<\/a>/p;}" 

Usage:

      echo RfNdaYqVxR0|1.sh > 1.htm
      chrome ./1.htm

I don't know anything about web tbh - what is that "key=AIzaSy[...]" bit? Is that a user id for duckduckgo private watching type of thing?

No, nothing personally identifiable about the so-called key. Every person who visits www.youtube.com uses the same one; it's public. Anyone can see it in the HTML page source for www.youtube.com. No need to be "logged in" or whatever the latest scheme is to track people for advertising purposes.

Try uBlock oirign my friend.