No one else can see your tax return so we cannot say why you owe federal tax. But you are posting from TurboTax Live, and you have access to live help.
You can arrange for Live help with your questions from 5 a.m. to 9 p.m. Pacific time.
https://ttlc.intuit.com/questions/4124827-how-do-i-connect-with-a-tax-expert-in-turbotax-live
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