Even Alves who was the best of the best use to get stick for his crossing every now and then.
I'm not worried at all when it comes to Dest from what he's shown so far. He's only 20 in his first season with the Club in a stronger league, it is going to take some time for him to consistently nail that final pass.
Crossing in general is tricky. You need to have some specific type of striker in order to make a crossing-based offense not seem a bit random. A lot of it is down to how the strikers position themselves, and how they dominate defenders.
If Madrid didn't have players like Ronaldo, Benzema, Bale in the box, all athletic, strong players who physically dominate defenders for fun, their crossing with Marcelo and Carvajal would've looked a lot more random.
Especially Ronaldo and Benzema. Ronaldo was A+ in terms of physical presence on crosses. Benzema very good also. When you have targets of that quality, of course your crosses look better.
Dani Alves forced the delivery a lot back in 2013 and 2014. Trying to pick up isolated targets without a great heading game. No wonder he misplaced so many crosses. Shouldn't have abused them anyway. Back then we had Messi, Alexis, Fabregas as threats in the box.
The only way these guys scored from crosses is if it landed perfectly on their head and the defenders missed the markings by 10 meters.
When peak Suarez came, in 2015, Alves' crossing picked up unsurprisingly, because he wasn't forcing it that much.