Nuance on this topic is hard to find, I support their takeover of Gaza but what they're doing now is very very sloppy.
Why hasn't Israel been able to corral and control the population? Why are they still shooting people trying to get aid? Why do they have no operational control over aid channels & disarming the population? The longer this goes on, the case that Israel is intentionally inflicting anguish and suffering, causing children to die & be unable to sustain life, the case for genocide gets stronger and stronger.
While Israel are dominant on the battlefield, they clearly have no knowledge on how to actually manage a defeated population (neither does America). France, the Ottomans, and the British have all been able to successfully control this population in the past. I fear that this knowledge is now largely lost with the post-WW2 LWO, they burned all the how-to manuals.
It’s hard to ‘manage’ a population when their own leadership is willing to sacrifice every last one of them. You’re asking why Israel can’t control the situation, but you ignore that Hamas deliberately turns civilians into human shields, blocks aid, and enforces chaos. No “post ww2 colonial manual” can fix a society where martyrdom is policy and children are weapons