Convert Console.Key to string! Need help (very basic stuff C# console)

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C#

string

convert

console

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static Random newletter = new Random();
        static void Main(string[] args)
        {
            
            string[] alphabet;
            Console.WriteLine("Typing reflex game"); Console.WriteLine(); Console.WriteLine();
            Console.WriteLine("You must type the letter you see as fast as you can");
            Console.WriteLine("Hit enter to start");
            Console.ReadLine();
            Console.WriteLine("The game starts in: 3"); System.Threading.Thread.Sleep(1000);
            Console.WriteLine("The game starts in: 2"); System.Threading.Thread.Sleep(1000);
            Console.WriteLine("The game starts in: 1"); System.Threading.Thread.Sleep(1000);
            ConsoleKeyInfo inputletter; 
            alphabet = new string[26];
            alphabet[0] = "A";
            alphabet[1] = "B";
            alphabet[2] = "C";
            alphabet[3] = "D";
            alphabet[4] = "E";
            alphabet[5] = "F";
            alphabet[6] = "G";
            alphabet[7] = "H";
            alphabet[8] = "I";
            alphabet[9] = "J";
            alphabet[10] = "K";
            alphabet[11] = "L";
            alphabet[12] = "M";
            alphabet[13] = "N";
            alphabet[14] = "O";
            alphabet[15] = "P";
            alphabet[16] = "Q";
            alphabet[17] = "R";
            alphabet[18] = "S";
            alphabet[19] = "T";
            alphabet[20] = "U";
            alphabet[21] = "V";
            alphabet[22] = "W";
            alphabet[23] = "X";
            alphabet[24] = "Y";
            alphabet[25] = "Z";
            do
            {
                Console.Clear();
                int lol = newletter.Next(0, 25);
                Console.WriteLine("Typing reflex game"); Console.WriteLine(); Console.WriteLine();
                Console.WriteLine("                     TYPE THIS LETTER:"); Console.WriteLine();
                Console.Write("                              "+ alphabet[lol]);
                inputletter = Console.ReadKey();
                inputletter = Convert.ToString;
                alphabet[lol].ToString();
                if (inputletter == alphabet[lol])
                {
                   // Add a point, or something
                }
                Console.WriteLine(inputletter.Key.ToString());
             } while (inputletter.Key != ConsoleKey.Escape);
            
            
        }
    }
}

This part:

inputletter = Console.ReadKey();
                inputletter = Convert.ToString;
                alphabet[lol].ToString();
                if (inputletter == alphabet[lol])
                {
                }

I'm practicing for college work and I'm trying to make a app where the user types in the letter shown then it shows how many they got correct out of how ever many attempted (and I will try put in a timer system). I don't know how to make it check if the inputletter (the key input when the letter is shown) is equal to the alphabet[lol] (being a random chosen letter in the alphabet array)

please help :(
and any other help would be greatly appreciated
- first time using this site

I get 2 errors:
Cannot convert method group ToString to non-delegate type System.ConsoleKeyInfo. Did you intend to invoke the method?

and:
Operator == cannot be applied to operands of type System.ConsoleKeyInfo and string