Keep winning by 68 points in league and Cup and your country rank should go up nicely. Result of a single game doesn't affect the rank a lot, in the short term it is the background noise that dominates. There are probably dozens of teams within a small margin and they all play games with some teams winning against stronger opponents etc. At the same time, the weighting of past games in the overall score changes, so perhaps a big win or loss in the past is erased from the score.