My Character is Not Moving

I discovered that my character is not moving, even though variables inputX and inputY have a value. The animator does work though. Can you spot a problem?

 namespace Common.Scripts
 {
     public class BasicCharacter : MonoBehaviour
     {
         #region Constants

         private static readonly int WALK_PROPERTY = Animator.StringToHash("Walk");

         #endregion


         #region Inspector

         [SerializeField]
         private float speed = 2f;

         [Header("Relations")]
         [SerializeField]
         private Animator animator = null;

         [SerializeField]
         private Rigidbody physicsBody = null;

         [SerializeField]
         private SpriteRenderer spriteRenderer = null;

         #endregion


         #region Fields

         private Vector3 _movement;
         private manageJoystick _joystick;
         private float inputX;
         private float inputY;

         #endregion


         #region MonoBehaviour

         void Update()
         {
             inputX = Input.GetAxis("Horizontal");
             inputY = Input.GetAxis("Vertical");
             //Walk
             if (inputX == 0 && inputY == 0)
             {
                 animator.SetBool("Walk", false);
             }
             else
             {
                 animator.SetBool("Walk", true);
             }
             //Transform
             if (inputX < 0)
             {
                 spriteRenderer.flipX = true;
             }
             else
             {
                 spriteRenderer.flipX = false;
             }
             _movement = new Vector3(inputX, 0, inputY).normalized;
         }

         private void FixedUpdate()
         {
             physicsBody.velocity= _movement * speed;
         }

         #endregion
     }
 }