So, are you alleging that the game is rigged against you, personally? What specifically about the matchmaking are you arguing? Is it that you're being matched with bad players intentionally? That the damage values are being adjusted so that one or the other team wins more easily? That the matchmaking isn't sufficiently randomized, and you're getting stuck playing against the same good players or on the same team as the same bad players, or if not the same actual players then players of the same skill level? Did you play these games in a row? Were the players different in each case, or did you have some overlaps?
Most importantly: did you look only at games that you lost? You may simply have explained why you lost those particular games that you chose to monitor and then lost: your team didn't do as much damage to the enemy as the other team did to yours.
He doesn't even have data for all 15 games in that chart. It's actually eight.