The Iron Dome stopped pretty much all the rockets
What didn’t stop Hamas on Oct 7th was Israel not paying attention to their own intelligence and the tips of neighboring countries, as well as an insanely slow response time
If they wanted to, they could definitely only defend themselves
They could also stop the illegal settlers and occupation in the West Bank (instead of using the IDF to support them)
And they could make an actual effort in working towards peace
But instead Israel has pretty much created this situation and has a president openly calling for the extermination of Palestinians (re: Amalek)