Steering a hot air balloon can somewhat be done through the wind directions and the persons ability to fly the hot air balloon.
But there's no steering mechanism on a hot air balloon to completely be able to perfectly steer the hot air balloon like you can a car or an airplane.
The hot air balloon pilot steers the hot air balloon by climbing or descending into different wind directions which is the way the hot air balloon gets steered into different directions.
It takes some good practice and knowledge to be able to steer the hot air balloon properly.