You are probably holding the treat too high, which is why your dog wants to jump to it. Hold the treat close to the dog's nose and move it slowly.
Sits down instead of turning around
Make sure to move the treat slowly, so your dog doesn't lose contact with it and keeps the interest in the food. Additionally, adjust the range of motion to your pet. Larger dogs need more space to perform this exercise. If the amplitude of your hand's movement is too small, the dog will probably sit down.
Not interested in the treat
Choose a super delicious treat and show it to your dog by moving it next to them and talking in an upbeat manner. You can also spin around your axes while the dog follows you. If the dog is reluctant to follow the treat, try doing this exercise while playing, e.g., play tug. Once the dog bites the toy, rotate the dog with a toy.
1. Take a very tasty treat in your hand, get your dog's attention to it.
2. Walk backward while turning around your axis, so your dog follows and turns around as well.
3. Later show an exaggerated hand gesture of drawing a circle from your dog's nose and back.