Sorry for your loss. My husband died in 2023 too. I filed 2023 as normal Joint. For 2024 i filed as Single on a new return and did not transfer from 2023. If you are using the Online version you need to set up a new account for yourself and not transfer from 2023.
You can file a Joint return the year your spouse died. For the next two years following a husband's or wife's death, the surviving spouse can file as a qualifying widow or widower if they have a qualifying child. That basically lets you continue to use the same tax brackets that apply to married-filing-jointly returns. After the year of death if you don't have a child you file as Single.
