Very sorry for your loss. For 2023, the year that your spouse passed, you were able to file a joint return. Now you can file as a qualified surviving spouse IF you have a qualified dependent child or step-child. If you are not claiming a dependent, then you will file as Single.
https://accountants.intuit.com/support/en-us/help-article/tax-filing-status/claiming-qualified-survi...
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.
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-start-another-return-in-turbotax-onli...
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**