Even freetaxusa charges for state taxes IIRC. Some of the cheaper ones surprise you with fees as soon as you add capital gains, crypto, or anything more interesting than W2 income.
I think the state fee for freetaxusa is something like $30 IIRC. It was small enough where I didn't even bother looking into whether it goes to the state or the software vendor. That's the cost of a casual lunch for one at 2025 prices.
I think it depends on the state. Virginia for instance used to have a free government run tax filing system, but the tax prep industry got a rep elected who killed it off and punished the state for its insolence with one of the highest e-file rates in the country.