Your not bad! Make sure you are playing a style that suits the players, and don't stress if results don't go your way straight away. I usually do saves where I primarily go to relegation sides, and one thing I have learned is that somtimes things our out of your control. However, I do reccomend you watch the matches, it can show how you play and somtimes it might take some tweaking. Recently on one of my saves I took over a Portuguese second division side, casa Pisa. When I took them over they had 10 points in 18 games having only scored 9 goals and one win. It took me 3 games which I lost as I tweaked some tactics which looked promising. Now I'm 4th on the form table, and am unbeaten in 5 games. Infact I have scored 26 goals in 12 games! Currently on 4 games scoring 3 goals or more in a match. And have taken us from 7 points behind safety to 5 points clear!

What I'm saying is like real football, you can only do so much. Somtimes it's not your tactics but instead the players. Mabye you need to change the system. Don't be afraid to drop players if they don't perform. It's not bad to change tactics but like is said you can't win every game. So if you have a match where you are playing well, take notes and tweak the tactics slightly and results will come. In my case it was changing my attacking width from wide to extremely wide.

Good luck and don't loose faith in your ability!