If you do the events and level up characters, gem farming is super easy dude, just learn how to play the game right instead of whining like a dumb mutt
I m in the game since the beginning hitting king of games multiple times. Some times I had over 9000gems by skipping boxes. The game insanely decrease the gems and increased the number of boxes over the year. The meta is shifting before you have gems to adapt. Don't be like a child.