Losing thrusts and gems

the game is very demotivating, 3 times playing in onsets and the game locks and exits the screen. On a gem reward too, I lost several and was hampered. It took me a long time to get into a good situation and I lost. Without counting the heroes that I hope to improve my team and I always leave only 3 stars. It helps us game administrators daily and I can not evolve. Close the account and go to another game. I’m sad because of this. I want to evolve.