how do i make enemy ai chase player

this is my code. it works but the enemy ai behaviour is weird and the hitbox is gone, i'm a beginner and this is not my code private Transform target; public int MoveSpeed = 4; public int minRange; public bool follow; public float scoreOnDeath; private Player player;

 void Start(){
     player = GameObject.FindGameObjectWithTag ("Player").GetComponent<Player> ();

     GameObject go = GameObject.FindGameObjectWithTag ("Player");

     target = go.transform;
 }

 public override void Die() {
     player.AddScore (scoreOnDeath);
     base.Die ();
 }

 void Update () 
 {
     if(Vector3.Distance(transform.position,target.position)<minRange)
         follow=true;
     if(follow){
         transform.LookAt(target);
         transform.Translate(Vector3.forward * Time.deltaTime);}
 }

}