Ranks mean nothing for now in Tekken 8, it has been confirmed that the " Top Players" are cheating. If you still wanna go, then I advise you to go to Arcade Mode, put Hard difficulty with your chosen character, and try to beat the run without a single death 5 times. Why though, right? The reason is that Arcade Mode AI opponents replicate what you will find in Ranked. It is a trick I see no one talking about, for example, there is a fight where the AI does most of the time low blows, another example is an AI that has good punishments. Put challenges as 'You can only defeat your opponent by starting the combo with a low parry'. It is an awesome way to get good at the game and predict the ranked player's movements more often while creating good habits and breaking bad ones.