TurboTax is most likely using the standard deduction because it is higher than your total itemized deductions. The standard deduction for 2018 is much higher than in past years. But if you want to change, follow the instructions in the FAQ at the link below. In the FAQ, click the blue link for the version of TurboTax that you are using, either TurboTax Online or TurboTax CD/Download.
https://ttlc.intuit.com/questions/1900142-how-do-i-change-from-the-standard-deduction-to-itemized-or...
