I used Downloadhelper but it doesn’t work with every video
Sorry guy but this is really not the forum for such discussions
Don’t use Facebook, Youtube Google Twitter. They are the enemy of Liberty. There are alternatives.
For better or worse, streaming is where the money's at in the music industry.
"Ripping" the sound from a music video on YouTube is easy enough to do (with any decent audio recorder like Audacity or EaseUS RecExperts) but technically illegal. Now I don't think anybody is going to bust your door down in the middle of the night for lifting the audio off YouTube videos but you would be committing copyright fraud.
Even if you were inclined to do so, it's probably more hassle than it's worth. Unless you are paying YouTube for a commercial free experience, you are going to have to probably edit out the ads manually.
Use newpipe app
Using https://www.mp3juices.cc/ you can search for, preview, and download videos as MP3 files.
Here’s another question: How can you upload a youtube song into your Spotify library?
Just copy the web address. Then in the program’s toolbar below you clock on Paste. It asks you what quality you want then downloads to where you want.
4K Video Downloader - FREE
https://www.4kdownload.com/products/product-videodownloader
Playlists themselves are sharable, you just make it public or unlisted (which is public but doesn’t show up in any randos search) and email here a link that comes up when you hit Share arrow.
If you really must download there’s a million of them. Just put Download Youtube in your favorite search engine. There’s websites that convert, useful if you’re only doing a few. There’s browser add-ons that will add a button. Pick one and go for it, if you don’t like it, pick the next. I use https://savetomp3.net/ but again, million.