Turbo Tax and the IRS only keeps the last 7 years. If they still have it……..
How to Access prior year online returns
https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/00/27010
If you can't get the side menus to open up to access the prior year..... You need to start entering some basic Personal Info in 2023 for the side menu to open up. Just continue a little ways into 2023. I had to go though about 12 screens.
If you used the Desktop CD/Download program then the only copy is on your computer and not saved or stored online. So you need to make and keep your own backups.
Or request a transcript from the IRS
https://www.irs.gov/individuals/get-transcript
Or get a copy of your return using form 4506
https://www.irs.gov/pub/irs-pdf/f4506.pdf
PLEASE Folks !
Download a PDF copy of your tax return EVERY year just after successfully filing it (and it has been accepted).
....Print a copy to put in a tax Folder.
.........Then copy the PDF file to a tax USB Flash drive with any other years as a backup since computers & disk drives do crash, or become corrupted (I use an encrypted flash drive for security)