you bring up a good point. When I still trained at a gym, I often started with clients who had never set foot into such environment and who were very ill at ease. At that time, I often acted like a buffer between the clients and the surroundings. I usually tried to introduce them to others at the gym so that I would not be the only person they knew.
Eventually, as I got to know them better, I made a point of relating the exercises to their real-life activities. It did not take long, and they told me that they now were able to do (….. fill in the blank ….) which they had not done in a long time.
For some, exercises have their own rewards, they love to move and challenge themselves. Others need a little nudging; it is important to make it relevant to their lives.