Guerrilla tactics only work against an enemy with too weak a stomach to exterminate civilians. You’ll notice for instance that there is little guerrilla activity in Russian occupied Ukraine, due to Russia not possessing any such scruples.

Perhaps they realize by first hand that Russian army is the lesser evil than the Ukrainian government or the local oligarchy. On the other hand, there apparently is some guirilla activity in Palestina and Gaza against the Israel occupation. Does it mean that Israel army possess too weak a stomach?