When you talk about democracy, there are basically two different kinds according to the Economist Intelligence Unit in the U.K. They are full democracies with 20 countries and flawed democracies with 55 countries.
A full democracy is when a country uses a system of checks and balances, independent judiciary, and independent media. A flawed democracy is when a country has democratic aspects being fair and free, underdeveloped political culture, and often with low levels of participation in elections.
Full democratic countries by Economist Intelligence Unit in 2019.
See how it compares to full democratic countries by World Atlas in 2018.
As you can see the U.S.A isn’t in either list, but often the world speaks of it as a place of democracy. It is even more so because of the aftermath of the presidential election. For the first time in U.S. history, the world is witnessing an incumbent president bucking the systems by not peacefully transferring power. Time will tell when the transition will happen (hopefully not forcibly) but both sides (Republicans and Democrats) are engaging in a super charged battle when tensions should be decreasing. Right now, most of us have to wait and hope for the best.