You have to file an Amended Tax Return for 2021 (even though you did not do one last year)
Note that since you did not do taxes last year, I do not think you can file electronically this year as you need last year's Adjusted Gross Income and it does not exist.
Do your 2021 and use TurboTax to do 2022 (print and mail in your returns) and in 2023 you can do everything electronically.
