Epidemicsound.com, artlist.io, audiio.com all have some decent/good quality music but they are all subscription based. It's ROYALTY free, but the license to USE isn't free. Be careful if you go with any subscription, with some of them, the license is only good if your subscription lapses but with others, the license is lifetime regardless of your subscription status. Source: over 1 year ago

Just in case you were thinking about buying it audiio.com sfx lifetime licence is pretty bad. After being blasted with ads for a one-off lifetime payment for sound effects I bit the bullet and purchased. Turns out it's pretty terrible. They have virtually nothing beyond a few very short city and landscape sounds and a couple of whooshes and some random effects. Source: almost 3 years ago

Check out https://audiio.com - it's fairly newish but they're updating weekly and they have a lifetime membership for a reasonable cost, the music is decent, and the licenses cover virtually anything you need it for. Source: about 3 years ago

Depending on what you're looking for, it may be helpful to generate a custom song using https://ampermusic.com. Source: over 1 year ago