Can someone at Blizzard look at my game history to verify the matchmaking is working properly? I don’t know how this can be working when my losses in a row are stacking up.
Matchmaking is simply a matter of comparing your current hidden matchmaking rating/skill rating and finding teammates and opponents with a reasonably similar skill rating so that both teams have an relatively equal team average skill rating. Under no circumstances does a matchmaker provide you a game that you are automatically guarenteed to win. Yes it is possible to lose multiple games (one time I lost 15 in a row), but loss streaks are more than likely going to be related how you are performing in the game as you are the only consistent factor seen in every match. As a personal tip, it is often a good idea to stop playing Competitive Play when you start losing more than 2 matches in a row.
Learn more about matchmaking and skill rating adjustments in this handy community guide: