No---you are Single. Your filing status is determined as of December 31, and at the end of 2020 you were single. You should start a new account with a new user ID because it is too hard to remove the "spouse stuff" from an account that was used for joint returns
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-start-another-return-in-turbotax-onli...
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