I have been on it non stop for the past 3 days with a friend and i suffer exactly the same as you.
Getting to a point now where i question my own tactics but i'm top drawer on the more modern games! you need to ask yourself whether it'll be tactically updated as an old game with for example Champ Man. My friend does better than me with all his training set to 'Fitness', which is strange. I try and do it properly with the correct training and it does nothing for me!
I'm trying Premier Manager 3, don't like the match engine but it's alot more detailed. I struggle on those tactics abit too!