RoApp/Assets/CinemachinePostProcessingV2/Samples~/Cinemachine Example Scenes/Scenes/BossCamera/BossLookAt.cs

using System;
using UnityEngine;

namespace Cinemachine.Examples
{
    /// <summary>
    /// Simple script that makes this transform look at a target.
    /// </summary>
    public class BossLookAt : MonoBehaviour
    {
        [Tooltip("Look at this transform")]
        public Transform m_LookAt;
        [Tooltip("Lock the camera's X rotation to this value (in angles)")]
        public float m_RotationX = 0;
        [Tooltip("Lock the camera's Z rotation to this value (in angles)")]
        public float m_RotationZ = 0;

        void Update()
        {
            transform.LookAt(m_LookAt);
            var euler = transform.rotation.eulerAngles;
            transform.rotation = Quaternion.Euler(m_RotationX, euler.y, m_RotationZ);
        }
    }
}