You may do both: use the standard deduction and deduct your business expenses.
That is, you do NOT itemized business deductions on Schedule A (personal itemized deductions). Business expenses are deducted (and business income reported) on Schedules C. This is in addition to using the standard deduction (or using Schedule A for personal itemized deductions).
Although it may be news to you that you “have a business” (and most of the other people who get their first 1099-NEC); The IRS considers anything on a form 1099-NEC to be self employment income. Enter the 1099 income, at Other Common income / income from a 1099-NEC . TurboTax (TT) will complete Schedule C for you and allow you to deduct any expenses associated with this income. You'll also have to pay self employment tax (social security & Medicare) on any profits greater than $432. These types of payments are frequently done this way. Your "employer" is not the only one.
