Need help clamping camera rotation

Unity Engine
1

I am really new to coding and made this code to rotate my camera around the player object but I do not know how I would proceed to clamp the rotation on the X axis.

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

public class FollowPlayer : MonoBehaviour
{
    public float speed;
    public Transform target;

    // Start is called before the first frame update
    void Start()
    {
       
    }
    // Update is called once per frame
    void Update()
    {
        transform.RotateAround(target.position, transform.right, -Input.GetAxis("Mouse Y") * speed);
        transform.RotateAround(target.position, Vector3.up, -Input.GetAxis("Mouse X") * speed);
    }
}

This is my code to rotate the camera, I want to clamp the Mouse Y one.

2

Use Mathf.Clamp Unity - Scripting API: Mathf.Clamp