im looking for my 2917 tax return

Do you mean 2017?   The IRS and TurboTax save returns for seven years; after seven years, they are gone.   The IRS might still have a transcript for 2017 which is not the same as the Form 1040, but it will show the information.

https://www.irs.gov/individuals/get-transcript

always save a pdf of each year's returns. best is to save a copy on your personal computer and a second copy on a removable drive. Many threads on this forum about drives going bad making the returns unrecoverable so having a copy on a second drive is advisable.  Another reason is that Turbotax only supports the current and 3 prior years tax files.  After the filing season officially ends for a year, shortly after it ceases support for the 3rd prior year. After that the 3rd prior year tax file can no longer be open