Why does Turbo Tax consider a widowed woman a single filler when spouse died within 2 years. Should be Qualifying Surviving Spouse filing status from what I can see.

So sorry for your loss.   For the year that your spouse passed away you could file a joint tax return.   But for 2024, unless you have a qualified dependent to claim, your filing status changes to Single.   It is best to start a new account with a new user ID.   It is too difficult to delete the embedded information from a spouse if you use the same account that was used for past joint returns.

For qualifying surviving spouse status, you have to be supporting a qualifying child or stepchild. You can learn more from this article from Intuit.