Scene Manager – Unity Asset Hub

using UnityEngine;
using UnityEngine.SceneManagement;

public class SceneManager : MonoBehaviour
{
    // Load a scene by name
    public void LoadScene(string sceneName)
    {
        SceneManager.LoadScene(sceneName);
    }

    // Load the next scene in the build settings
    public void LoadNextScene()
    {
        int currentSceneIndex = SceneManager.GetActiveScene().buildIndex;
        SceneManager.LoadScene(currentSceneIndex + 1);
    }

    // Reload the current scene
    public void ReloadScene()
    {
        int currentSceneIndex = SceneManager.GetActiveScene().buildIndex;
        SceneManager.LoadScene(currentSceneIndex);
    }

    // Quit the application
    public void QuitGame()
    {
        Application.Quit();
    }
}