Try and play your matches at health around 90%+ then you should be winning more matches, usually train players once matches are completed and work out the level of health you need before the next game, when you played your 1 or 2 matches, and you have 18 hours to the next, train all your players down to around 60% health, and the +5 rest every 3 hours will bring them back to 90% again.

I would also suggest you buy better goalkeeper and better midfielders.