How would I get my character to be able to move while in the air after a jump?

The thing is after I remove the anim.SetTrigger("isJumping") I am able to move in the air but I wont have a jump animation.

Code

public class JumpingandSHit : MonoBehaviour { private CharacterController controller; Animator anim;

 private float verticalVelocity;
 private float gravity = 14.0f;
 private float jumpForce = 10.0f;


 // Start is called before the first frame update
 void Start()
 {
     controller = GetComponent<CharacterController>();
     anim = GetComponent<Animator>();
 }

 // Update is called once per frame
 void Update()
 {
     if (controller.isGrounded)
     {
         verticalVelocity = -gravity * Time.deltaTime;
         if (Input.GetKeyDown(KeyCode.Space))
         {
             verticalVelocity = jumpForce;
             anim.SetTrigger("isJumping");

         }
     }
     else
     {
         verticalVelocity -= gravity * Time.deltaTime;
     }

     Vector3 moveVector = new Vector3(0, verticalVelocity, 0);
     controller.Move(moveVector * Time.deltaTime);
 }

}