To change a tax return that has already been filed you must Amend the tax return. If this is for a federal tax return you have to use Form 1040-X to amend the filed tax return.
You can use TurboTax to amend the return, complete the Form 1040-X manually or have a local tax professional assist you in completing the amended return.
See this TurboTax support FAQ for amending a 2021 return - https://ttlc.intuit.com/community/tax-return/help/how-do-i-amend-my-2021-return/00/2544441
