I am having a problem in FM19 at the moment. I am playing with a small team, but have managed to get great results in the league. However, there has been an ongoing issue, with almost every game I play. No matter what tactic I use, I almost always concede to either free kicks, corners, and/or when the opponent crosses the ball to another opponent in the penalty box, then proceeding to score from either a header or kick/volley. For the league games, this isn't much of an issue, as the opposition usually doesn't score to begin with, or I score more goals than them. However, against bigger teams (mainly in the champions cup), this is a big issue. It doesn't happen all the time against bigger teams, but half of the time against larger teams I lose due to these set pieces and/or crosses. For a start, I tried stopping the free kick goals by tuning down on the tackling in the opposition instructions, and it worked, however, the opposition just scored from corners and crosses instead, like before.
What should I do to stop these issues in order to start winning matches against these larger teams?