Check out example codes for "unity load scene". It will help you in understanding the concepts better.
Code Example 1
using UnityEngine.SceneManagement; //Put this in whenever you want to load a scene SceneManager.LoadScene("Scene name");
Code Example 2
using UnityEngine.SceneManagement; int buildIndex = 0; //Load the scene with a build index SceneManager.LoadScene(buildIndex);
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