You'd think "it will happen" if you give it time. Maybe you need to score some goals from different opportunities - I'd put some emphasis on set plays, try to get someone (Cavani?) in position to poach second-chance opportunities, seriously discourage long shots, and try to encourage players forward into the box so it's congested and unpredictable things will happen - you've clearly got the quality to capitalize on such things. Plus if you're buzzing around the box you'll earn free kicks and penalties, Ronaldo territory... In other words, don't be "too pretty". Usually, once you start scoring, if you have quality, it will just keep happening, even from the situations that didn't score before, as confidence grows, and you can ease back into your preferred style. Or maybe not
Is there any pattern to these shots "on target" but not scoring?