The problem with your assessment is here:
“Suddenly, there was an attack and all dissatisfaction with Likud and Netanyahu vanished.”
Very much this is not the case. The removal of Netanyahu is a slow process but his lasting support primarily was based on his promise of domestic security for Israelis and that has obviously disappeared. Democracy is a slow process.
If your argument comes down to “you don’t have the evidence to prove a negative” that’s a pretty strong indicator that your argument is weak. People saying something isn’t proof. If one is to make expansive claims there should be evidence to support those claims.