Check out example codes for "unity method on scene loaded". It will help you in understanding the concepts better.

Code Example 1

using UnityEngine;
using UnityEngine.SceneManagement;
public class ExampleCode : MonoBehaviour
{
    // called zero
    void Awake()
    {
        Debug.Log("Awake");
    }    
    
    // called first
    void OnEnable()
    {
        Debug.Log("OnEnable called");
        SceneManager.sceneLoaded += OnSceneLoaded;
    }    
    
    // called second
    void OnSceneLoaded(Scene scene, LoadSceneMode mode)
    {
        Debug.Log("OnSceneLoaded: " + scene.name);
        Debug.Log(mode);
    }    
    
    // called third
    void Start()
    {
        Debug.Log("Start");
    }    
    
    // called when the game is terminated
    void OnDisable()
    {
        Debug.Log("OnDisable");
        SceneManager.sceneLoaded -= OnSceneLoaded;
    }
}

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