The US is not a perfect free market. But it is closer than other countries.
Socialism, on the other hand, makes things worse the closer one gets to "true" socialism.
Worse for who? The US outcomes have been very good for the wealthy, especially the ultra-wealthy, but less good for other people than outcomes in many other wealthy countries.
Somalia has the US beat.
Worse for who? The US outcomes have been very good for the wealthy, especially the ultra-wealthy, but less good for other people than outcomes in many other wealthy countries.