Deductions & credits

This does not seem to work for me — at least doing my 2020 taxes in 2021.   I sold a vacation home (never a rental or income property).   I sold it for less than I paid for it, however, even though I typed in “Second Home” to identify what it was, it still calculates the loss for me and drastically changes my refund on both federal and state return.  I know the loss of your second (non-investment, non-rental property) home is not tax deductible, yet TurboTax does not ask me the questions to prevent it from calculating the loss on Schedule D.  Do I just have to enter a cost basis the same as the sale price reported on 1099-S from in order not to have a loss?   Even though the cost basis of course, is made up?   Makes no sense.