Manager level 6,
You can try this;
Sell players on auction,
Increase match ticket to 3.
Play atleast 2 friendly matches and do less training.
Don't sign new players and sell extra players in auction if you have more than 16 players.
Try to watch videos and complete offers.
Sometimes you can sign a player in auction even if you have less amount,just your account will go in negative figures which can be recovered later anytime.