Is The Ranking System Glitched?

In Season 6 i was bronze 2, i just did my ten placements. Just before i got my rank it said that my rank would be lower than it was last season, i got Bronze 1, what?

Scores: 19/7 8/10 8/7 14/9 8/0/5 13/8 12/8 9/5 3/5/10 (support) 6/4/6

Is this normal?