I think Amazing Music Tracks - Royalty Free Music is a great resource. This library includes lots of cinematic film tracks and tons of different categories. Make sure to check these out:
If you want some new perspectives I would recommend a Chinese stock music library: 100Audio. It is the best for video editors located in China. You can find all kinds of music including traditional Chinese style to EDM all commercially ready.
I use musicscreen.org to add background music for my drone videos. However, if you are going to use for commercial purpose then you would need a license as well. You can also see free music at SoundCloud.