This is seriosly a problem

How am I supposed to fix this issue with this buggy client. It tells me I am not connected to the internet or I cannot connect to the server and then I just barely make it in time before my team remakes, i make it as they remake, or I make it into the post game lobby after the game is over. The issue is not with my internet connection as I am connected to the internet on my laptop. I kee getting the message over and over again and it keeps having me click reconnect only for me to pray that is isnt going to give me the message over again. HOW AM I SUPPOSED TO FIX THIS BECUASE THIS IS COSTING ME LP!!!!