How did drones destroy the iron dome that missiles could not?

The Israeli people watching the Gaza war started to feel the war with the Hezbollah attacks. The Israelis were watching the war on TV just like us before.

Hezbollah first attacked with missiles and now it is attacking with drones. Four Israeli soldiers were killed and more than 60 people were injured

The strange thing is this: Hezbollah had previously launched 200 missiles but the statement made by Israel stated that there were no deaths or injuries. It was said that there was an ‘iron curtain’ protecting Israel but now that iron dome has either collapsed or been breached. Isn’t it easy to track and shoot down drones in a country where missiles are shot from the air? Do drones have a feature that makes them untrackable in the air?

Either Israel’s iron dome is a lie or drones are more effective than missiles and cannot be detected.