I don't have windows 10. Is there a another way?
2019 versions of the installed (desktop) TurboTax product, purportedly, will not support Windows 7, officially.
Whether 2019 desktop versions will actually install and run on Windows 7 is a different matter. Regardless, Intuit will not provide support for TurboTax on that operating system (assuming it can even be installed and run successfully).
Intuit states TurboTax won't support Windows 7 starting with 2019 tax year. TT 2019 is not available yet, so whether it will run on Windows 7 is unknown. I suggest you consider upgrading(?) to Windows 10; Microsoft will stop supporting Windows 7 in January 2020, and will therefore stop issuing security and other updates for it.