Unity Move Object

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MoveToGoal : MonoBehaviour
{
    

    //public float speed = 0.3f;
    public float accuracy = 0.01f;
    public float randX = 1f;
    public float randY = 1f;
    public float randZ = 1f;
    public Transform goal;

    
    



    public float reactGoalX;
    public float reactGoalY;
    public float reactGoalZ;



    void Start()
    {
        
    }

    void Awake()
    {
        
    }

    // Update is called once per frame
    void LateUpdate()
    {
        this.transform.LookAt(goal.position);
        Vector3 direction = goal.position - this.transform.position;
        
        if(direction.magnitude > accuracy)
            this.transform.Translate(direction.normalized * PersistentManagerScript.Instance.speed * Time.deltaTime, Space.World);

        if (direction.magnitude < accuracy)
        {
            
            if(PersistentManagerScript.Instance.lives > 0)
            {
                PersistentManagerScript.Instance.lives = PersistentManagerScript.Instance.lives - 1;
                Destroy(this.transform.gameObject);
            } else
            {

                if (PersistentManagerScript.Instance.lives == 0)
                {
                    //PersistentManagerScript.Instance.lives = PersistentManagerScript.Instance.lives - 1;
                    PersistentManagerScript.Instance.deathSequence();
                    Destroy(this.transform.gameObject);
                }

            }


            

            print("Go Boom! " + PersistentManagerScript.Instance.lives);
        }
            
    }

    public void react()
    {
        randX = Random.Range(-1.5f, 1.5f);
        randY = Random.Range(-1.5f, 1.5f);
        randZ = Random.Range(-0.5f, 0.5f);


        this.reactGoalX = this.transform.position.x + randX;
        this.reactGoalY = this.transform.position.y + randY;
        this.reactGoalZ = this.transform.position.z + randZ;


        Vector3 reactGoal = new Vector3(reactGoalX, reactGoalY, reactGoalZ);
        StartCoroutine(MoveFromTo(this.transform, this.transform.position, reactGoal, 2));
    }


    IEnumerator MoveFromTo(Transform goal, Vector3 a, Vector3 b, float speed)
    {
        //Vector3 reactGoal = new Vector3(goal.position.x, goal.position.y, goal.position.z);
        print("MoveFromTo");

        Vector3 reactGoal = new Vector3(0, 1, 0);

    float step = (speed / (a - b).magnitude) * Time.fixedDeltaTime;
        float t = 0;
        while (t <= 1.0f)
        {
            t += step; // Goes from 0 to 1, incrementing by step each time
            goal.position = Vector3.Lerp(a, b, t); // Move objectToMove closer to b
            yield return new WaitForFixedUpdate();         // Leave the routine and return here in the next frame
        }
        goal.position = b;
    }
}