There are plenty of sites that let you download the audio files from YouTube videos. You can do a quick Google search and pick any site that works for you. We tried YTMP3.cc, and it worked just fine for us.
To download audio files from YouTube videos online, open YTMP3.cc and paste the YouTube link in the text box. Make sure you’ve selected mp3 below the text box and then click Convert. A few seconds later, you’ll see a blue Download button on the site. Click that and save the file to your computer.
If you are looking for Android apps that download YouTube songs, you’ll find it hard to get a reliable option on the Play Store. Yes, you can try sideloading apps, such as NewPipe, to download songs off YouTube for free, but it’s not something we recommend. Sideloading compromises your Android phone’s security, so you should avoid this method unless you know what you’re getting into.