The world is more complex than that.
China is not "bad" because it is not a democracy. China is "bad" because it competes with the USA.
There are other countries that are not a democracy an that are allies with the USA, like Saudi Arabia. But they are "good", apparently.
And also, just remember that the USA only supports the democracies that are aligned with the way of thinking. Just do a bit of research and see what happened to South America in the 70s' and 80's... and more recently to Bolivia.
Also, most of the products that you use today were built, at least in part, in China.
The world is more complex than that. China is not "bad" because it is not a democracy. China is "bad" because it competes with the USA.
There are other countries that are not a democracy an that are allies with the USA, like Saudi Arabia. But they are "good", apparently.
And also, just remember that the USA only supports the democracies that are aligned with the way of thinking. Just do a bit of research and see what happened to South America in the 70s' and 80's... and more recently to Bolivia.
Also, most of the products that you use today were built, at least in part, in China.