Offer arrived, can I still ask for more? - 9 months and counting

I received an offer as a line cook and I think the pay is a little low. I have read a lot of threads here and could not find my exact situation. I have a competing interview next week. Did it backfire?

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

If they say no, consider asking for something else, such as a review in six months.