diff --git a/src/bot/statistics.py b/src/bot/statistics.py
index a04cf54..b0977dc 100644
--- a/src/bot/statistics.py
+++ b/src/bot/statistics.py
@@ -17,15 +17,18 @@ def _get_period_dates(self, period_days):
             period_days = STATISTICS_PERIOD_DAYS
         end_date = datetime.utcnow()
         start_date = end_date - timedelta(days=period_days)
+        logger.debug(f"Period dates calculated: start_date={start_date}, end_date={end_date}")
         return start_date, end_date
 
     async def get_general_stats(self, period_days=None):
         """Gather general statistics for each application state"""
         start_date, end_date = self._get_period_dates(period_days)
         applications = await self.db.fetch_application_states_within_period(start_date, end_date)
+        logger.debug(f"Fetched {len(applications)} applications within period")
 
         total_applications = len(applications)
         status_counts = Counter(app['application_state'] for app in applications)
+        logger.debug(f"Application status counts: {status_counts}")
 
         return {
             'total_applications': total_applications,
@@ -40,10 +43,13 @@ async def calculate_average_processing_times(self, period_days=None):
         start_date, end_date = self._get_period_dates(period_days)
         processing_times = await self.db.fetch_processing_times_within_period(start_date, end_date)
         if not processing_times:
+            logger.debug("No processing times available")
             return None, {}
 
+        logger.debug(f"Processing times fetched: {processing_times}")
         total_time = sum(app['processing_time'] for app in processing_times)
         overall_average = total_time / len(processing_times)
+        logger.debug(f"Overall average processing time: {overall_average} seconds")
 
         times_by_category = {}
         for app in processing_times:
@@ -55,7 +61,7 @@ async def calculate_average_processing_times(self, period_days=None):
             app_type: sum(times) / len(times)
             for app_type, times in times_by_category.items()
         }
-
+        logger.debug(f"Average processing times by category: {average_times_by_category}")
         return overall_average, average_times_by_category
 
     async def get_common_update_time(self, period_days=None):
@@ -63,15 +69,19 @@ async def get_common_update_time(self, period_days=None):
         start_date, end_date = self._get_period_dates(period_days)
         hours = await self.db.fetch_status_change_hours_within_period(start_date, end_date)
         if not hours:
+            logger.debug("No status change hours available")
             return None
 
+        logger.debug(f"Status change hours fetched: {hours}")
         hour_counts = Counter(hours)
         most_common_hour, _ = hour_counts.most_common(1)[0]
+        logger.debug(f"Most common update hour: {most_common_hour}")
         return int(most_common_hour)
 
     async def predict_user_application_time(self, chat_id, period_days=None):
         """Predict the approval time for the user's applications"""
         applications = await self.db.fetch_user_subscriptions(chat_id)
+        logger.debug(f"User {chat_id} has {len(applications)} applications: {applications}")
 
         # Get average processing times by category
         _overall_avg, avg_times_by_category = await self.calculate_average_processing_times(period_days)
@@ -84,9 +94,14 @@ async def predict_user_application_time(self, chat_id, period_days=None):
             type = app['application_type']
             avg_time = avg_times_by_category.get(type)
             if not avg_time:
+                logger.debug(f"No average time available for application type {type}")
                 continue  # Skip if no average time is available for this type
-
+            logger.debug(f"Application {app['application_id']} type: {type}, avg_time: {avg_time}")
             time_elapsed = (datetime.utcnow() - app['created_at']).total_seconds()
+            logger.debug(
+                f"Application {app['application_id']} time_elapsed: {time_elapsed} seconds, "
+                f"estimated_remaining: {estimated_remaining} seconds"
+            )
             estimated_remaining = float(avg_time) - time_elapsed
             if estimated_remaining > 0:
                 predictions.append({