If the USA is so free, how does it have only two choices for president & why are they not chosen by the citizens?

The U.S. follows a presidential system of democracy. While many other countries(around 70 - 80) including India, Germany, Italy, Israel, Australia, Japan and many others follows parliamentary system of democracy where citizens elect Members of Parliament (MPs), and the majority party in Parliament selects the Prime Minister, who serves as the head of government. The Prime Minister can be removed by Parliament if they lose confidence, preventing political deadlock.