You will have to Form 1040-NR because you are still a nonresident alien for 2021. TurboTax does not support Form 1040NR for a nonresident. You can prepare your return through a company we partner with called Sprintax.
Generally, F-1 visa holders are not considered residents until their 6th calendar year in the United States. Therefore, from 2017 until Sep 2021 you were exempt from the Substantial Presence Test because of the F-1 visa. Your days counting towards the Substantial Presence Test started on Oct 1st, 2021, when you got the H1B visa. But you had only 92 days in 2021. Therefore, you didn't meet the Substantial Presence Test for 2021 and you will have to file a nonresident return (Form 1040-NR) for 2021.
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