Align T-REX 450 Pro Idiotic Crash

Have been flying CP helis for a bit more than 2 months now. The weather had been so miserable that we were grounded for the past week. This is what happens when you lose connection with your heli.... I crashed 3 helis in that same gloomy afternoon. I am trying to find out what exactly made my poor heli went down like a stone; maybe my pitch control was not precise enough when the heli is nose-up. If you know what I did wrong, please leave me a message and tell me... and I need a lot more practice to keep up with 450Pro's high potential...