You can also just Do a Search Within YouTube. Go to the YouTube “search” tool and type in “Creative Commons Music.” You can even get more specific and type, for example, “Creative Commons Music Background Chill.”
You can use the tracks for personal use for Free, under their use and mention license. This means you are able to use it as long as you are not “monetizing” the use of it.
Be careful and make sure you know which ones you’re looking at. Luckily, they offer you the option to buy the track for around $9 if you want to use it for monetized videos.