Being divorced within the taxable year I can understand the divorced versus joint tax filings, but each sequential year after that would seem to me that I would file as single.
Divorced is not a filing status on a tax return. The software asks about divorce in order to lead to questions pertaining to alimony, etc. But if you have been divorced since 2018 you file as Single, or maybe as Head of Household if you have a qualifying dependent. Look at the filing status choices on the top of a Form 1040. "Divorced" is not among them.
PREVIEW 1040
https://ttlc.intuit.com/questions/1901539-how-do-i-preview-my-turbotax-online-return-before-filing
Click on Tax Tools on the left side of the screen. Click on Tools. Click on View Tax Summary. Click on Preview my 1040 on the left side of the screen.
If the divorced was finalized on or before 12/31/2018 then you file as Single for that year and all subsequent years if you remain unmarried.