Raycast hit not detection gameobject?

Hi, I have an gameobject. And I move this gameobject to a certain point.When a certain distance passes a new prefab instance.This gameobject stops when it reaches the ontriggerenter point.

Until this stage there is no problem.

there is a raycast in the new instance prefab.I want this raycast to stop when it hits the gameobject in back.

     void FixedUpdate() {
                 rb.MovePosition (transform.position + transform.forward * speed * Time.fixedDeltaTime );
     
                 RaycastHit hit;
     
                     Vector3 forward = transform.TransformDirection(Vector3.forward) * 30;
                     Vector3 back = transform.TransformDirection(-Vector3.forward) * 30;
     
                 Debug.DrawRay(transform.position, forward, Color.yellow);
                 Debug.DrawRay(transform.position, back, Color.blue);
             
                     if (Physics.Raycast (transform.position,(forward), out hit)) {
                         if (hit.distance <= 10.0f && hit.transform.tag == "apple") {
                             rb.constraints = RigidbodyConstraints.FreezeAll;
                         } 
                         else {
                             rb.MovePosition (transform.position + transform.forward * speed * 
                                                     Time.fixedDeltaTime );
                             rb.constraints = RigidbodyConstraints.None;
                         }
                     }
  }

If the gameobject in front is gone, let it continue to move.