If you are still legally married as of 12/31/2023 then on your 2023 tax return you can only file as either Married Filing Jointly or Married Filing Separately.
Unless you have not lived with your spouse as any time during the last six months of 2023 And you have a child as a dependent then you may be able to file as Head of Household - https://ttlc.intuit.com/turbotax-support/en-us/help-article/taxation/married-person-claim-head-house...
