diff --git a/telegram_bot/api_handling/api_handler.py b/telegram_bot/api_handling/api_handler.py
index bc5ef79..88810ce 100644
--- a/telegram_bot/api_handling/api_handler.py
+++ b/telegram_bot/api_handling/api_handler.py
@@ -74,15 +74,19 @@ class API_Handler:
                 return None
 
 
-    def get_user_keywords(self, user_id):
+    def get_user_keywords(self, user_id, max_retries=10):
         """gets the keywords of the user
         
         Args:
             user_id (int): id of the user
+            max_retries (int): max retries for the request
 
         Returns:
             list: list of keywords
         """
+        if max_retries <= 0:
+            return None
+            
         keywords = []
         with r.Session() as s:
             headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
@@ -95,7 +99,7 @@ class API_Handler:
                 return keywords
 
             else:
-                return self.get_user_keywords(user_id) # might end in infinite loop!!
+                return self.get_user_keywords(user_id, max_retries-1)
 
 
 
@@ -133,24 +137,32 @@ class API_Handler:
             return req.status_code
 
 
-    def get_user_shares(self, user_id):
+    def get_user_shares(self, user_id, max_retries=10):
         """gets the shares of the user
 
         Args:
             user_id (int): id of the user
+            max_retries (int): max retries for the request
 
         Returns:
             list: list of shares
         """
+        if max_retries <= 0:
+            return None
+
         with r.Session() as s:
             headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
             req = s.get(self.db_adress + "/shares", headers=headers)
-            shares_json = req.json()["data"]
-            shares = []
-            for share in shares_json:
-                shares.append(share["symbol"])
+            if(req.status_code == 200):
+                shares_json = req.json()["data"]
+                shares = []
+                for share in shares_json:
+                    shares.append(share["symbol"])
 
-            return shares
+                return shares
+            
+            else:
+                return self.get_user_shares(user_id, max_retries-1)
 
 
     def set_share(self, user_id, symbol):
@@ -185,15 +197,19 @@ class API_Handler:
             return req.status_code
 
 
-    def get_user_transactions(self, user_id):
+    def get_user_transactions(self, user_id, max_retries=10):
         """gets the transactions of the user
         
         Args:
             user_id (int): id of the user
+            max_retries (int): max retries for the request
         
         Returns:
             dict: dictionary of transactions
         """
+        if max_retries <= 0:
+            return None
+
         with r.Session() as s:
             headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
             req = s.get(self.db_adress + "/transactions", headers=headers)
@@ -201,6 +217,8 @@ class API_Handler:
             if req.status_code == 200:
                 transactions_dict = dict(req.json()["data"])
                 return transactions_dict
+            else:
+                return self.get_user_transactions(user_id, max_retries-1)
 
 
     def set_transaction(self, user_id, count, price, symbol, timestamp):
@@ -223,20 +241,27 @@ class API_Handler:
             return req.status_code
 
 
-    def get_user_portfolio(self, user_id):
+    def get_user_portfolio(self, user_id, max_retries=10):
         """gets the portfolio of the user
 
         Args:
             user_id (int): id of the user
+            max_retries (int): max retries for the request
         
         Returns:
             dict: dictionary of portfolio
         """
+        if max_retries <= 0:
+            return None
+
         with r.Session() as s:
             headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
             req = s.get(self.db_adress + "/portfolio", headers=headers)
-            portfolio_dict = dict(req.json()["data"])
-            return portfolio_dict
+            if req.status_code == 200:
+                portfolio_dict = dict(req.json()["data"])
+                return portfolio_dict
+            else:
+                return self.get_user_portfolio(user_id, max_retries-1)