More Protective play?



Okay I'll try and play more central.
But which pieces are most effective in the center? is it mainly about horses and pawns?
Okay I'll try and play more central.
But which pieces are most effective in the center? is it mainly about horses and pawns?
My situation:
I have no opening that I can get along with and end up in the middle game with a fair position. This was an exception.
My queenside was ripped apart. Can I avoid such casualties?
My successful exploitation of the g file was actually luck. I saw the opening but I wasn't sure what to do with it. Will tactics training here at chess.com help the game foresight I'm lacking?
I have timing issues. Thats why I fail at the 5 minute blitzes. This game was remarkably played with 10:16 on the clock for white and 5:34 for myself. How can I speed up my play with out losing horrifically?
The guy I was playing had (new champ) after his name, I asked him about it and he said it was because he beat the champion of his school chess club. I was disappointed.
Thanks, All feedback, comments and suggestions are encoraged.