Simple choices.
Find the tunnel entrances. Seal them with large amounts of explosives. Move on to the next one.
The hostages are mostly dead by now. There is no point in risking soldiers' lives by entering the tunnel systems for any reason.
The Israelis once released over 1200 HAMAS terrorists for one IDF hostage. It was a bad trade. Many of those HAMAS terrorists went on to become leaders in the October 7 raids. IDF will not repeat that sort of mistake. Say prayers of mourning for the hostages and move on.
Destroy all minor structures and bulldoze the rubble into clear lanes of fire or clear traffic lanes. Destroy major structures as needed to prevent enemy fighters from using them for observation posts or sniper positions.
Any non-IDF person in northern Gaza must be considered hostile and a non-uniformed combatant. Yes, that includes ten-year-old children. Treat all persons accordingly.
Enemy fire from any source must get artillery, cannon, bombs, or rocket fire in counter-response until the area is levelled. "Civilian" casualties? See the previous section about non-uniformed combatants.
If they are unarmed and headed south, let 'em go. Otherwise, they are targets. See the previous section about non-uniformed combatants.
Note that I am not an IDF commander. I do not even play one on the internet. The real commanders are far too busy to pay any attention to the likes of me and anyway they have a better understanding of what they must do in their situations.
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There’s “Purple Smoke”...