Hamas is not the Arab League. The Arab League does have outsized influence in the UN. The Arab League doesn’t so much care about Hamas (or Palestinians) as they do shitting on Israel.

Then Hamas has food, water, medicine ready for the civilians in Gaza

Israel arranged that. Those countries didn’t want to provide aid because they don’t actually like Hamas, because Hamas-alllied terrorists struck in their countries (and others). This is why they don’t accept Palestinian refugees.

Hamas does appropriate those goods whenever it can, though.