Troll result aside, when yr opponent is creating as many or more chances than you despite having only 30% possession, it is a good ideal to look at your midfield/wingers.

Wingers should contribute to goals & assists while MCs are there to look good and not make you lose possession. So if the opponent is creating a lot of chances with little possession then, your MC is not doing that basic job of looking good and holding possession.

If your MC is getting an 8 rating, then i refer you back to Mourinho on Troll results.