I see. I was almost the same way, I had a limited amount of people to play with, but most of them were not dedicated. They kept switching back and forth between games, not really trying to elevate their skill in SC4. Now, my local community is dead.
Could you possibly give me some advice on training? Do you focus on winning, or simply focus on areas that need improvement? Do you take notes, or record your matches for review? Anything would help.