Well you would need to install the 2023 program on another computer. Then you need the .tax2023 file of your return. It was only saved on your computer so if you didn’t make a backup you will have a harder time amending.
If you don't have the original Turbo Tax .tax file you have to first recreate the actual wrong original return. You can use the Forms Mode. Then when it matches each line that you really filed you have to tell Turbo Tax you will mail it so it thinks it was filed. Then you can amend it. You will have to print and mail amended returns.