Good day, congratulations on getting married this year.
There are two filing options for tax year 2021: Married Filing Jointly; Married Filing Separately.
Below are two great TurboTax articles addressing your questions.
Should You and Your Spouse File Taxes Jointly or Separately?
Is it better for a married couple to file jointly or separately?
For specific planning, you are welcome to use TurboTax Online 2020 program, setting up three user IDs - MFS husband, MFS wife, MFJ and compare results. In general, MFJ is the best choice.