Bug My button wont click

and half of my options have disappeared

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.SceneManagement;
5.  
6. public class MainMenu : MonoBehaviour
7. {
8.     public string firstLevel;
9.  
10.  
11.       // Start is called before the first frame update
12.     void start ()
13.     {
14.  
15.     }
16.  
17.     // Update is called once per frame
18.     void Update()
19.     {
20.        
21.     }
22.  
23.     public void StartGame()
24.     {
25.          SceneManager.LoadScene(firstLevel);
26.     }
27.  
28.     public void CloseOptions()
29.     {
30.         optionsScreen.SetActive(false);
31.     }
32.  
33.     public void QuitGame()
34.     {
35.         Application.Quit();
36.     }
37. }

 

There is no button component attatched to this

 

bro i am soo stupid sorry

 

No worries, it happens to the best of us