GUI.Button error

Hello so i what i was trying to do was create a simple code in which when i press a button it would bring up 5 buttons but it doesn't seem to work when i try to test it. Does anyone know why it isn't working? It changes colors correctly but doesn't bring up the buttons. Thanks in advance!

 if(button1Clicked)
 
 GUI.color = Color.red;
 
 else
 
 GUI.color = Color.white;
         
         if (GUI.Button(new Rect(400,400,100,20), "Inventory")){{
             button1Clicked = true;
             button2Clicked = false;
             button3Clicked = false;
             button4Clicked = false;
         }
         if (GUI.Button(new Rect(470,440,50,50), "")){}
         if (GUI.Button(new Rect(520,440,50,50), "")){}
         if (GUI.Button(new Rect(570,440,50,50), "")){}
         if (GUI.Button(new Rect(620,440,50,50), "")){}
         if (GUI.Button(new Rect(670,440,50,50), "")){}
         }