Isaac Herzog expressed concern, saying the harsh Gaza reality is deeply troubling.

I tried to rephrase that for you, but it's a bit tricky. I can suggest a slightly polished version, though:
Israel's President Isaac Herzog voiced concerns over the government's actions, just hours before the cabinet made the unprecedented move to fire the head of Shin Bet. Herzog expressed his deep trouble over the unfolding reality, without directly mentioning Prime Minister Netanyahu.

Israel's President Isaac Herzog voiced concerns over the government's actions, just hours before the cabinet made the unprecedented move to fire the head of Shin Bet. Herzog expressed his deep trouble over the unfolding reality, without directly mentioning Prime Minister Netanyahu.

Source: https://www.lemonde.fr/en/international/article/2025/03/21/israel-s-president-expresses-concern-over-steps-taken-by-netanyahu-s-government_6739377_4.html