If you used the TurboTax online product and used another account, you would have to open that account to find your 2018 tax return. Use this link to recover other accounts: https://ttlc.intuit.com/community/account-management/help/how-many-turbotax-accounts-do-i-have/00/26...
If you used the CD/download product to file your return, the only place you can find the 2018 tax return would be on your computer. TurboTax does not have copies of returns filed using the CD/download product.
