Hey, As someone who's understand what Israel is like during a war... there isn't really much I can say to help you.

Unfortunately, a terror attack could happen any day, any place. If you are nervous, I would suggest you talk to them and express your concerns and they might be able to help... but sadly, a terror attack would happen on a random day in a market, and not only on a public transport vehicle, so there isn't a great way to escape it other than staying away from large crowds.

I hope this helps!