The system is designed to pit players with equivalent skill levels against each other. This naturally means that if you go on a win streak, your skill rating will go up and you will start to play against tougher opponents, making it ever harder to maintain your winning streak. Similarly, if you lose too many games, your skill rating will go down and you'll start to see easier competition.
We understand that is can sometimes be frustrating since you do not get to see your skill rating at any given time, nor do you get to see the rating of your opponents.
Fundamentally though, the system will never "put a finger on the scale" and force you to lose or to match up two completed games to dictate the winner.