It's just bad luck.What does it mean when you've been diamond 3 times and everytime you were on your way up your team picks a comp that gets ran over and no matter how much healing you do you lose?
ELO hell?
Not as good as you think you are?
The system is working.jpg?
I almost hit 65 in season 1 when I had 9 back to back games in the same night where I had a quitter on my team. 9 losses in a row due to different people quitting. Improbable? Definitely. But it happened and it's just bad luck, not some divine intervention where I was assigned a team mate who was predisposed to quitting in 9 games in a row.