Mluti-Agent_simulation/3DModule/Assets/_DTYJ/Scripts/Online/LookAtCamera.cs

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

namespace DTYJ
{
    public class LookAtCamera : MonoBehaviour
    {
        private void Update()
        {
            if (Camera.main != null)
                transform.LookAt(Camera.main.transform, Vector3.up);
        }
    }
}