Animation is not working

Hello. I would like to make animations of opening the door which closes by itself after 3 seconds. I do everything 1: 1 like from the tutorial, but the animation still doesn't work. What could be the problem? This is my code.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class LoopManager : MonoBehaviour
{
public Animator doorsAnim;
[SerializeField] float sec;
[SerializeField] bool canMove;
public Movement move;
public MouseLook mouse;
public FlashLight flash;
public int whichLoop;
public GameObject startLoopTrigger;
// Start is called before the first frame update
void Start()
{
canMove = false;
whichLoop = 0;
}
// Update is called once per frame
void Update()
{
if(canMove)
{
sec += 1 * Time.deltaTime;
}
if(!canMove)
{
sec = 0;
move.speed = 2f;
mouse.sens = 1000f;

}
if(sec > 0)
{
move.speed = 0f;
mouse.sens = 0f;
transform.Translate(0, 0, 0.8f * Time.deltaTime);

}
if(sec >= 3)
{
canMove = false;
}

}
public void OnTriggerEnter(Collider other)
{
if(other.CompareTag("loop"))
{
transform.position = new Vector3(-6.2f, 0.879f, 5.174f);
mouse.MouseX = 90f;
doorsAnim.SetInteger("loop", 1);
canMove = true;
whichLoop += 1;
}
}
public void OnTriggerExit(Collider other)
{
if(other.CompareTag("loop"))
{
doorsAnim.SetInteger("loop", 0);
}
}
}