legal resident for fed tax purposes

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).

It depends, in general, students with an F1 visa are not resident aliens for income tax purposes.   A resident alien for tax purposes is a person who is a U.S. citizen or a foreign national who meets either the “green card” or “substantial presence” test.  

F student visa holders are considered resident aliens after five calendar years in the U.S.

See Foreign students.