The most common reason is because they are either shotting in haste ( low time wasting + counter attack + the player being at the end of the move deep down the field, normally happends to strikers or AMR/L) or that they lack options when playing too narrow and to slow, resulting in the box being crowded and most of your players are standing staill after already haven taken there run etc( mostly happends to plaers deeper down the field)
Is there any of these scenarios you see much of ?