C# bubble sort inputs from footballers

So I am trying to make a list of how many goals a couple of guys did in one year.

It is supposed to be sorted in a bubble sort list. But all that is happening is that I get error codes.

I want each player to be able to input how many goals he did that season. And then the results should be output onto the screen in a sorted list.

Highest first and players in a list.

The code looks like this below. I have also pasted the wrong-message I get about “Main” but I don’t quite understand it. Should I put / before the word Main in the code or what?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Form_App
{



    class GFG
    {
        static void bubbleSort(int[] arr)
        {
            int n = arr.Length;
            for (int i = 0; i < n - 1; i++)
                for (int j = 0; j < n - i - 1; j++)
                    if (arr[j] > arr[j + 1])
                    {
                        // swap temp and arr[i]
                        int temp = arr[j];
                        arr[j] = arr[j + 1];
                        arr[j + 1] = temp;
                    }
        }

        /* Prints the array */
        static void printArray(int[] arr)
        {
            int n = arr.Length;
            for (int i = 0; i < n; ++i)
                Console.Write(arr[i] + " ");
            Console.WriteLine();
        }

        // Driver method
        public static void Main()
        {
            int[] arr = { 64, 34, 25, 12, 22, 11, 90 };
            bubbleSort(arr);
            Console.WriteLine("Sorted array");
            printArray(arr);
        }
    }





    public partial class Form1 : Form
    {
        
        public Form1()
        {
            InitializeComponent();
        }

        private void btn_hello_Click(object sender, EventArgs e)
        {
            lbl_hellomessage.Text = "Nice to meet you";
        }

        private void Sortera_Click(object sender, EventArgs e)
        {
            lbl_hellomessage.ForeColor = Color.Red;
        }

        private void textBox2_TextChanged(object sender, EventArgs e)
        {

        }
    }
}