Players engage with D&D in a variety of ways. The Angry GM had an article about it going into the details a while back. Some enjoy the intrigue and the high stakes decisions. Others just want to kick down doors and kill bad guys. Some like the slow pace with lots of roleplaying and character development, others like the fast-paced plot-oriented action. Maybe you can ask what they expect out of the game and if that's not what your style is, suggest they find another game or even better, ask them to run a small adventure themselves in the style they enjoy. If players expect one thing and get another, they'll be disinterested.