You have reached training level 28 just at level 2. Men, your greens must be flowing like a stream.
The best advice I can give to you is not to sell any body from your original level one team untill you have identified the rotten tomatoes, and the golden goose. The best player you can find in T11 is usually in your lvl1 - start up team. Probably a young lad 19 or 20 years by now. Mine is an AMR, if he doesn't score the winning goal, he will pull the team to a draw, if he is not at the front he is blocking a shot at the back, or making an important tackle. He is just programmed to be the saviour of your team. Look for him and do anything legally possible to train him.
The rotten tomatoes are those ones that habitually rated 5 or 6, sell them without thinking twice. They also have a way of picking up yellow cards no matter what you do - just find someone to replace them.