In a nutshell your closing costs will depend primarily on your credit score, type of loan program (FHA,VA, or CONV) loan amount, property taxes, whether you have to pay a real estate transfer tax or not, and what if any seller concessions you may have. For someone to quote/tell you what your closing costs should be without knowing these key factor is doing you more harm than good.
Your present lender should have explain all this to you. And any lender you may speak to thereafter should do the same. If not, they're not qualified to assist you. Good luck