bug fix

MafiaTelegramBot/CustomCollections/StatisticsList.cs

@@ -10,7 +10,7 @@ namespace MafiaTelegramBot.CustomCollections
 
         public StatisticsEntity this[Roles role]
         {
-            get => _statistics[role] ?? new StatisticsEntity();
+            get => _statistics.ContainsKey(role) ? _statistics[role] : new StatisticsEntity();
             set => _statistics[role] = value;
         }