hello i have a doubt about "feeding frenzy"
i can play the the ability "exhaust this card while attacking a figure that has suffered damage to apply +1 damage to the attack results" only if the target of the attack was alredy damaged before i declare the attack instead
if the target wasn't damaged but i hurt it with the attack itself i can't use it.
Is it correct?

Yes. Feeding Frenzy is used during step 4 of the attack. Step 7 applies damage from this attack.

Ability Resolution Order During Attacks

Thanks!