https://en.wikipedia.org/wiki/Gaza_war
Look under "belligerents" and you'll see Israel and ISIS together. Anyone with a clue knows that ISIS is US/Israel supported proxy group. Israel is using this group to:
1- Loot UN aid under IDF protection, horde it in warehouses & sell some on the blackmarket
2- Carry out recon missions on behalf of the IDF
3- Secure aid going to the Israeli proxy group, GHF
4- Establish concentration camps on behalf of the IDF in Eastern Rafah & use looted food to lure people there
5- Establish a puppet "security force" that the IDF puts in charge of areas they had depopulated to be their proxy militia against Hamas
6- Claim this group is Hamas when it steals aid and kills civilians
None of this should be a surprise given how Israel funded and supported Hamas. Benjamin Netanyahu in 2019 said "Anyone who wants to thwart the establishment of a Palestinian state has to support bolstering Hamas and transferring money to Hamas… This is part of our strategy – to isolate the Palestinians in Gaza from the Palestinians in the West Bank.