Why did Israel and Iran avoid to inflict 'severe damage' in direct conflict

Israel retaliated against Iran's direct attack, bringing the long-standing adversaries into direct conflict in the Middle East. The strikes followed Iran's assault on Ayatollah Ali Khamenei's 85th birthday. Both sides claimed minimal damage, with Iran's media stating no significant impact near Isfahan. Israel echoed similar sentiments from Iran's previous attack on April 13, emphasizing no severe harm.