Using unlicensed audio in your videos is against YouTube's terms and is getting many people's YouTube accounts shut down. Often without warning. You need a variety of tracks in different styles & genres to set the mood of each video. That‘s why Twinkle provides tracks in a wide array of genres & styles.
And if you still can’t find what you’re looking for then submit a custom track request, their sound artists will do it for you, and will continue creating new tracks based on your requests! simply shoot a link to a track you like and they will do their best to create something similar (without copying of course).