Authenicating for hours on end

After waiting around an hour attempting to log into league and getting stuck at authenticating i tried to full repair my client afterwards it still got stuck on authenticating after 2 more repairs the same problem happened and then i tried reinstalling the game and the same thing happened i thought that it was my internet but it couldnt be my internet unless league in order to launch takes up more data than discord google chrome and steam running at the same time