Theo – your thread title says “film music” but the music itself says “artist”. It’s really not film music at all. The two are quite different, and have different uses, ways of composition, and outlets of license.
For instance, “film music” rarely has vocals attached, and is almost always not in a “song” format.
I’m guessing that you want to be an artist and license your songs as such – not compose music for “film”. You might try Crucial. They are focused more towards licensing ‘songs” from what I’ve seen.