Why have Ukrainian ATGMs Destroyed so many Russian tanks?

Why have ATGMs been so effective in the war so Fa

Anti-Tank Guided Missiles or ATGMs have become a defining symbol of the Ukrainian fight against Russian invasion. They have destroyed countless armoured vehciles and provided endless material for viral social media clips. But why have ATGMs been so effective in the war so far, and could that be about the change?
 
Credit to : Imperial War Museum