There's a latent bias here that any audience can be engaged. That's simply not true. Some stories are told in a medium that is difficult for specific audiences to agree with (I'm thinking here of the difference between people who learn by listening, reading, doing), but some audiences just won't care about the story you're telling. You could be Tolkien himself, but if people you happen to be telling a story to aren't interested in fantasy, they won't engage.

Engagement is like dating: be attractive, don't be unattractive, and remember that it's a numbers game. "Be attractive" meaning, learn how to tell a good story. "Don't be unattractive" meaning, don't make stupid mistakes like not using a microphone and speaker in a large group, or hitting send at 7 PM on a Friday night. "Remember that it's a numbers game" meaning, don't spend all your energy on your first audience and get discouraged if they don't engage; just do you and tell your story to as many people as possible until you find those who do engage with you.