I think he (Netanyahu) has actually been played by Hamas, in the sense that they wanted him to react the way he has, in the hope that other terrorists would join in and the conflict would broaden, which it has. @Auvergne63
But Hezbollah did not join in. Up until about a month ago, their contribution was relatively harmless. There were exchanges of artillery and rockets across Israel's northern border ( mostly directed at the other sides military positions) but in the grand scheme of things, they were relatively unimportant. Few people were killed in the 11 months since Oct 7 and the main result was that there were lots of brush fires and 60,000 Israelis had to evacuate.
The only really devastating weapon that Hezbollah have is their "doomsday launch" in which they simultaneously send thousands of missiles and rockets into Israel. They were estimated to have anything up to 120,000 before the conflict, though a good proportion of these will have been destroyed in the past 3 weeks.
Iron dome ( a battery of 20, which takes time to reload) , David's sling and Arrow 2 and 3 would be unable to cope with this onslaught and enough Hezbollah missiles would get through to cause extensive death and destruction. Hezbollah have held back on this option, because it would be a major escalation that could drag Iran and the US in on more than just the token "we're here to help.. up to a point" that they have done so far.
So whilst you might think what is happening at the moment is bad, it could get far, far worse.
Of course the whole thing could stop now if certain parties would entertain the idea of a ceasefire.... but they won't.