Your fans are a captive audience.  They have made things pretty convenient for you by choosing to be online 24/7.  Youtube, Facebook, Twitter, and everywhere else.  What’s important here is that your fan base is NOT going to buy your music right away – or at all. You need to put your music out for free. Why? Because the world needs to hear your music before they even consider buying it. Many people still just don’t buy music anymore.
Put your music on platforms like BandCamp, Spotify, Youtube, SoundCloud. They each have a unique appeal. (Look into CD Baby or TuneCore for streaming platforms like Spotify and Apple Music.