Can't enter itemized medical expenses

TT says that the standard deduction saves us the most on taxes, and this is probably true given that our expenses are not greater than 7.5% of our adjusted gross income.  But how does TT know that if we were never given an opportunity to enter our itemized medical expenses?  Under Deductions & Credits I click Medical/Visit All.  I answer "yes" to having med expenses, "none of the above" to health-related accounts, and neither of us have High Deductible Health Plans (just ACA bronze).  From that, TT concludes that the standard deduction is best.  What am I misunderstanding?