I know the feeling when you stack heros and the colours you stack seem to have been purposely left out - however that’s the random nature of this game. You can’t predict ahead of time the best line up, you have to adapt and use what’s been dealt. You won’t win every battle, but you will win some.
To suggest they should decrease the prevalence of a certain colour tiles, negates the game dynamics. The tiles are random - when you change the probability of coloured tiles occurring you change the game. To what end?
Should we change the rules in sport so we can all get a gold medal too? Not everyone gets gold all the time, similarly no one wins every E&P battle.
Good luck for the next tournament.