Infinite Reloading

so, I’m new to Unity and I made a reload to my fps game, but the problem is when I select play mode
he keeps reloading forever even that I set the reload time to 2
here is my script, and hope someone helps

using UnityEngine;

using System.Collections;

public class Gun : MonoBehaviour
{

public float damage = 10f;
public float range = 100f;
public AudioSource ShootSound;
float timer = 0.0f;
float cooldownTime = 1.0f;
public float fireRate;
private float accuracy;
public AudioClip singleShot;
public int maxammo=10;
private int currentammo;
public float reloadtime= 3;
private bool isReloading= false;

public Camera fpscam;

void OnEnable(){

isReloading= false;
}

void Start()
{

 maxammo=currentammo;

 ShootSound= GetComponent<AudioSource>();

}

// Update is called once per frame
void Update()
{

    if(isReloading)
    return;

    if(currentammo <= 0)
    {
        StartCoroutine(Reload());
        return;
    }

    if(timer > cooldownTime)
    
      if(Input.GetMouseButton(0))
    
    {
        {
       {
        Shoot();
        ShootSound.Play();
        timer = 0;
        }
        }
         }

      if(timer < cooldownTime + 1)
      
        timer += Time.deltaTime

;

IEnumerator Reload()
{
isReloading= true;

Debug.Log("Reloading...");
yield return new WaitForSeconds(2);
currentammo= maxammo;
isReloading= false;

}

}

void Shoot(){

    currentammo--;

 RaycastHit hit;
 if(Physics.Raycast(fpscam.transform.position, fpscam.transform.forward, out hit, range))
 {
    Debug.Log(hit.transform.name);

   Target target= hit.transform.GetComponent<Target>();

   if(target!= null)

   {

    target.TakeDamage(damage);
    
   }
 }
}

}

In your start, you set max ammo to current ammo.

maxammo=currentammo;

Current ammo looks to be defaulted to 0. When you are reloading, current ammo looks to be set to max ammo and causing an infinite loop.

Set current ammo to maxammo. also make sure in the inspector that max ammo is set to a number higher than 0 since public variables can change in the inspector.