You are trying to put the blame on Palestinians!
Israel's continued practice of detaining Palestinians without trial and expanding settlements into Palestinian territories is the reason for resentment from Palestinians. Indiscriminate bombing by Israel in the current conflict is going to feed that resentment for decades. Thousands of Palestinians, including women and children, are in Israeli prisons under administrative detention orders, which allow authorities to detain individuals indefinitely without charge or trial. This practice violates international human rights. One thing that Munich incident did was bring the plight of Palestinians to light.
To prevent future tragedies like the Munich incident, Israel must take real steps towards ending its policies of arbitrary detention and land expropriation; it's not rocket science. Israel are the real terrorists here.