Добавьте файлы проекта.

Services/Games/Extentions/ServiceCollectionExtentions.cs

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+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
+using Services.Tickets.Extentions;
+
+namespace Services.Games.Extentions;
+
+public static class ServiceCollectionExtentions
+{
+    public static void TyAddGamesService(this IServiceCollection services)
+    {
+        services.TyAddTicketService();
+        services.TryAddScoped<IGameService, GameService>();
+    }
+}

Services/Games/GameService.cs

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+using Microsoft.Extensions.Logging;
+using Services.Numbers;
+using Services.Tickets;
+using Services.Tickets.Models;
+using System.Net.Sockets;
+
+namespace Services.Games;
+internal class GameService : IGameService
+{
+    private readonly INumbersService _numbersService;
+    private readonly ITicketService _ticketService;
+
+    public GameService(ILogger<GameService> logger, INumbersService numbersService, ITicketService ticketService)
+    {
+        _numbersService = numbersService;
+        _ticketService = ticketService;
+    }
+
+    public async Task<List<(List<LotteryTicket> winTickets, int matches)>> GetWinnersTickets(byte[] winNumbers)
+    {
+        List<LotteryTicket> tickets = await _ticketService.GetAllTickets();
+        return CalculateWinners(tickets, winNumbers);
+
+    }
+
+    private List<(List<LotteryTicket> winTickets,int matches)> CalculateWinners(List<LotteryTicket> tickets, byte[] bytes)
+    {
+        List<(List<LotteryTicket> winTickets,int matches)> results = new();
+        for (int i = 0; i < bytes.Length; i++)
+        {
+            List<LotteryTicket> winners = new List<LotteryTicket>();
+            for (int j = 0; j < tickets.Count; j++)
+            {
+                if (bytes.Except(tickets[j].Numbers!).Count() == i)
+                {
+                    winners.Add(tickets[j]);
+                    tickets.RemoveAt(j);
+                }
+            }
+            results.Add((winners, bytes.Length - i));
+        }
+        return results;
+    }
+
+    public byte[] GetWinNumbers()
+    {
+        return _numbersService.GetNumbers(6);
+    }
+}

Services/Games/IGameService.cs

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+using Services.Tickets.Models;
+
+namespace Services.Games;
+
+public interface IGameService
+{
+    byte[] GetWinNumbers();
+    Task<List<(List<LotteryTicket> winTickets, int matches)>> GetWinnersTickets(byte[] winNumbers);
+}