How's an organization supposed to surrender when all of its leaders have been assassinated? Who's going to walk up to an IDF emplacement while claiming to lead Hamas? How would such a death-defying individual prove that they had any actual significance to Hamas?
1. Would it even mean anything? It’s not like you or anyone else has the control to stop everyone else. And Israel will use any attack as a sign of bad faith and ignore the surrender.
2. Would it improve anything for your people? If Israelis are intentionally starving babies, there is no reason to think they will stop the genocide just because the militarized part has given up. Have you even heard any news of Hamas even fighting back recently or has it all just been killing civilians?
All a surrender would do is get you tortured for information and executed for no gain.