Season 6 Ruined Strategies

Losing 2 matches in ranked as Leona shouldn't tilt me this much, considering I did all I could to turn lanes around.

What I didn't expect in both matches was to have my ADC roaming in the first minute to push other lanes while Im trying to freeze bot lane in a solid 8 minute 2v1 matchup. What happened to the teamplay and strategies from the end of Season 5 that helped me win 5-1? The teams I got in week 1 of Season 6 just suddenly had no clue how to be a unit...