The problems

The reasons I can only give this four stars is one tournaments arent fair, they often put you to battle people from 2 arenas ahead of you leaving there no possible way of winning. Second people from very high arenas often drop to low ones so they can get more victories which isnt fair to the people they battle. To fix this I think there should be a rule where if you drop arenas you are only allowed to use cards available to people in that arena.
The last problem is legendary cards, I keep being put up against people with three and I only have one, this is in no way fair and needs to be fixed.

Timestops1 about Clash Royale, v1.8.1