Deductions & credits

I don't understand your question.

 

Start by printing out and reviewing your tax return.  While the laws that control what items go where are complicated, the form is a straightforward math problem, addition and subtraction.

 

If you had a regular W-2 job that will be taxable income.  If you also have a self-employment business, that had a loss (expenses more than income) that can sometimes offset the taxable income from your W-2 job.  Even if it does not offset, you would not owe tax on your W-2 job unless you earned more than $12,200.  

 

If you had owed no taxes, and paid no taxes, why do you think you would get free money?  (A refund that was more than your tax.)  There are some credits that will pay you even if you don't owe tax (child tax credit and EIC) but you generally have to have earned money from working.  You didn't earn any money from working at your business, and you don't say your age or if you claimed dependents.  So generally, if you paid no tax and owed no tax, why do you think you should have gotten a refund?