how do i file federal tax by mail without fite state since i am a non us resident

NON RESIDENT ALIEN  

If you are a non-resident alien, your return must be filed on Form 1040NR, which cannot be prepared using TurboTax.  You can use TT’s partner, sprintax:

https://www.sprintax.com/non-resident-alien-tax-1040nr-turbotax.html

IRS —HOW TO DETERMINE RESIDENCY STATUS FOR TAX

https://www.irs.gov/individuals/international-taxpayers/determining-an-individuals-tax-residency-status#:~:text=If you are not a,January 1 – December 31).