With only a few games, it is a bit tricky. My main focus for analysis is in the trends. In this game, guys can go into funks. Sometimes, a shake-up in the starting line-up fixes it but you never know. Also, newer guys tend to take awhile to get it going. The game is big on chemistry. Bring in a new strong striker, and they go dry for a number of games before catching fire.
Another thing I look at is who is shooting and how accurate they seem to be. Tends to match their composure and creativity. If you really like the player but they are Mr. Miss-a-lot, then I try and change up their role a little to make sure they aren't ruining all of the good chances.
For your defenders, the stats can look decent but do not reflect the fact that pacey forwards fried them during the game. Only your eyes can see that. Just make sure you don't leave two slow dudes out there at the same time unless you drop your d-line way back. Even then, the slow guys can get cooked.
So much more to bring up, but I'll let others who know way more than me do that.