How much room is there after an offer?, procurement assistant here

I received an offer as a procurement assistant and I think the pay is a little low. It has been weighing on me all week. The benefits are decent. Did it backfire?

Thanks for writing this out. I went through something close to it last year, and it settled down once I kept a simple log of every call and form.

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