I think people who have managed their Energy Capture Rate(ECR) will find the rewards are consistent for season rewards. This means that they add on average 5 chest per day to the season total. The Daily focus is harder at first and gets easier the further they progress in the season/league. (3 chest, 4 chest, 5 chest) Yes luck of the draw for focus makes a big difference to some people.
In 3 days I am at 18 chests which was the amount of chest I received last season in Silver 1.