Offer arrived, can I still ask for more? - what worked for you?

I want to negotiate but I am afraid they will withdraw. This is my first time dealing with any of this. The hiring manager was friendly and open. What wording worked?

Ask about the range, not a number on its own. It felt more collaborative.

I thanked them and said I was excited but hoped we could talk about the pay. They came back with a bit more.