Choosing top teams is normal but they don't win all the time especially when a top team is matched to a top team as well. When you are into sports, you need to be a die hard fan of the sport to know and analyze winning possibilities and how a match could play out.
The strategy that you would need to do is bet on a team with the odds of 1.10 versus 2.00 with your $1000. This way you get to win $100 every time.