Get index of element from the list

Hi, here is my problem:
I have a list of names, prices etc… in another script. In first script I make 4 gui buttons and once is button clicked I need to get an number for item I just clicked (hope you guys understand, I will also attach picture):

First script (here I acces my lists):

				// Accesing other script
				GameObject mainCamera = GameObject.FindGameObjectWithTag("MainCamera");
				ScriptActors scriptActors = mainCamera.GetComponent<ScriptActors>();
				int heightGuiPosOffSet = 0;
				
				// Here we want to show all of our actors
				for (int i = 0; i < scriptActors.names.Count; i++)
				{
					heightGuiPosOffSet += 100; // Offset for our buttons
					
					// Show actors available to contract
					if (GUI.Button(new Rect(Screen.width / 2 - 225, Screen.height / 2 + heightGuiPosOffSet - 300, 450, 100), "Name: " + scriptActors.Name(i) + ", " + "Age: " + scriptActors.Age(i) + ", " + "Focus: " + scriptActors.Focus(i) + ", " + "Price: " + scriptActors.Price(i)))
					{
						 
					}		
				}

Here is my second script (with my lists):

public List<string> names = new List<string>{"Johny Fapp", "Angelina Trollie", "Peter Smooth", "Leonardo Mario"};
	public List<int> ages = new List<int>{18, 22, 54, 45};
	public List<string> focuses = new List<string>{"Action Films", "Documentary", "Sci-fi Films", "Nasty Movies"};
	public List<int> prices = new List<int>{10000, 2300, 2000, 60000};

	
	public string Name(int nameIndex)
	{
		
		return names[nameIndex];
	}
	
	public int Age(int ageIndex)
	{
		return ages[ageIndex];
	}
	
	public string Focus(int focusIndex)
	{
		return focuses[focusIndex];
	}
	
	public int Price(int pricesIndex)
	{
		return prices[pricesIndex];
	}

I was also thinking to make it this way:

int actorIndex = 0;
				
				if (GUI.Button(new Rect(Screen.width / 2 + 20, Screen.height / 2 - 100, 100, 50), "NEXT"))
				{
					actorIndex += 1;
					
					Debug.Log(actorIndex);
				}
				
				if (GUI.Button(new Rect(Screen.width / 2 - 80, Screen.height / 2 - 100, 100, 50), "BACK"))
				{
					actorIndex -= 1;
					
					Debug.Log(actorIndex);
				}
				
				if (GUI.Button(new Rect(Screen.width / 2 - 225, Screen.height / 2 - 200, 450, 100), "Name: " + scriptActors.Name(actorIndex) + ", " + "Age: " + scriptActors.Age(actorIndex) + ", " + "Focus: " + scriptActors.Focus(actorIndex) + ", " + "Price: " + scriptActors.Price(actorIndex)))
				{
						 
				}

But I don’t know why actorIndex is not changing though

Nevermind, I have already solved it