AI enemy. Enemy behavior, movement animation?

Question

Unity

Hello, I'm working on the behavior of mobs, moving them to the sides before attacking, and so on. So far, 3 types of attack, if the player is at a distance of 6 from the enemi, a certain long-range attack, if closer 3 is close, I am writing a 3d game.
How to create an enemi behavior like in souls games for example. For example, I made a banal interval before attacks, a blow and after 2 seconds the enemi just stands or goes then again a blow. But it's kind of gross. And how to connect the animations correctly, it seems to work, what is the problem, the screenshot shows how it is arranged, each animation has a checkmark on has exit time.

code, somewhere not logical I know, but it does not give errors

public Transform povorotPoint;
  public float speedrotation;
  public GameObject Obj;
  
  //Зона детекта
    public string EnemyTag="Player";
  public float seeDistance = 7f;//дистанция детекта 
  private Transform target;
  public float attackDistance = 4f;//дистанция атаки 
  
  private float timer;//интервал атаки
  
  public GameObject Tochka;
    
  public int name;


  // Use this for initialization
  void Start () {

    target = GameObject.FindWithTag(EnemyTag).transform;
  }
  
  // Update is called once per frame
 void Update () {
    if (Vector3.Distance (transform.position, target.transform.position) < seeDistance) {

      

      Obj.transform.LookAt(povorotPoint);// Быстрый поворот

      Obj.GetComponent<Animator> ().SetBool ("Walk", true); //анимация ходьбы

      Obj.GetComponent<Animator> ().SetBool ("jumpattack2", true);

    }
    else
    {
      Obj.GetComponent<Animator> ().SetBool ("Walk", false); //анимация ходьбы
      Obj.GetComponent<Animator> ().SetBool ("jumpattack2", false);
    }


    if (Vector3.Distance (transform.position, target.transform.position) < attackDistance) {
      
           onAttack ();


           	Obj.GetComponent<RunOnOf>().enabled = false; 	 //  отключение скрипта
      
    }
    else
    {
      Obj.GetComponent<Animator>().SetBool("jumpattack", false);
      Obj.GetComponent<Animator>().SetBool("Attack3", false);
      Obj.GetComponent<RunOnOf>().enabled = true; 	//  включение скрипта
      //Obj.GetComponent<Animator> ().SetBool ("Walk", true); //анимация ходьбы
    }
  
    

  }
  
  
  
  void onAttack()
  {
    timer += 1 * Time.deltaTime;
    if (timer >= 2.7f) {
           
      Obj.GetComponent<Animator> ().SetBool ("jumpattack2", false);

    
      name = Random.Range(0,3);
      if (name == 1) {
        Obj.GetComponent<Animator> ().SetBool ("jumpattack", true); //ближняя атака не проигрывается
      } else {
        Obj.GetComponent<Animator>().SetBool("Attack3", true); // эта ближняя атака не проигрывается тоже
      }

    
      
    //	triggerWeapon.SetActive (true);
      
            timer = 0;

      
    }
  }

The main question is why are the melee animations not playing? Can share a good code and throw a screenshot with the arrangement of the animation, if possible. I don’t understand how professional studios make bots behave like this, different attacks are like enemy in soul games