C#
using System;

namespace IDK
{
    public class Functions
    {
        public static string AskString(string Question)
        {
            while (true)
            {
                Console.WriteLine(Question);
                string? UserInput = Console.ReadLine()!.ToLower();
                if (!string.IsNullOrEmpty(UserInput) ) 
                {return UserInput; }
            }
        }
        public static bool AskYesOrNoQuestion(string Question)
        {

            var UserInput = AskQuestion(Question, ["y", "yes", "n", "no"]);

            return new string[] { "y", "yes" }.Contains(UserInput);
        }
        public static string AskQuestion(string Question, string[] Awsners)
        {
            while (true)
            {
                Console.WriteLine(Question);
                string? UserInput = Console.ReadLine()!.ToLower();
                if (Awsners.Contains(UserInput)) 
                { return UserInput;  }
            }
        }

    }
}

C#
using System;

namespace IDK
{
    public class Functions
    {
        public static string AskString(string Question)
        {
            while (true)
            {
                Console.WriteLine(Question);
                string? UserInput = Console.ReadLine()!.ToLower();
                if (!string.IsNullOrEmpty(UserInput) ) 
                {return UserInput; }
            }
        }
        public static bool AskYesOrNoQuestion(string Question)
        {

            var UserInput = AskQuestion(Question, ["y", "yes", "n", "no"]);

            return new string[] { "y", "yes" }.Contains(UserInput);
        }
        public static string AskQuestion(string Question, string[] Awsners)
        {
            while (true)
            {
                Console.WriteLine(Question);
                string? UserInput = Console.ReadLine()!.ToLower();
                if (Awsners.Contains(UserInput)) 
                { return UserInput;  }
            }
        }

    }
}