Sometimes I don't understand my team... or the engine:

League, we played vs 11.place, who used illegal formation. We were around 50% stronger... made only a 4:0 win. My team was rested around 88%-99%, nearly full moraled from FA.
We got only 7 shots on target vs this weak team...
(we are black, home)
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After league, we played (we are L8) vs ~10% stronger, managed L11 team. We won... we only had one shot on target more against our weak opponent at league... Team was rested ~80-85%, moral was slightly lower, cause one MC and DL went down to lightgreen.
We won 2:1, after my Keeper made a really bad mistake at 1' -> he kicked the ball from the box to an opponent player, who run towards my keeper and scored easily...
(we are black, home)
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And again... I really want to know, how to increase the efficiency.
We had a lot shots, but really low rate of shots on targets. And the final efficiency isn't that good.