Yes, of course the best traders have bad days. There are many traders who can make predictions on trading platforms. Sometimes all those traders also have to fall into bad situations. The market does not always influence the analysis, sometimes it is influenced very badly. I have personally seen that many times after taking the trading from the market one has to suffer a lot of losses and it takes a long time to recover from those losses. So trading platforms can never guarantee that you will never incur losses.