You are mixing up marital status and filing status. TurboTax asks you for your marital status, then it recommends a filing status for you. When it asks for your marital status, you should select divorced as long as you have not remarried. It will probably select single as your filing status. Your marital status does not appear on your tax return.
You can look at your past tax returns to see what filing status was used. Your filing status is indicated by a checkbox at the very top of the first page of your Form 1040. Since 2018 the checkboxes for filing status have been above your name.
