I'm so glad that I live outside the US. Not that we have good options but at least more than 2. I guess I would still vote for Biden but I wouldn't call it a democracy
The US is mostly a democracy. It could be a full democracy if they got rid of the Electoral College, put in non-partisan election commissions (to prevent gerry-mandering) and had a formalized run-off system instead of a creaky old primary system. Their system is antiquated but it works most of the time, but the "mostly works" part of it means there's not a lot of pressure to make improvements so the US could be a democracy all of the time.
Still wouldn't be truly democratic if the media institutions are owned by the ultra wealthy, and parties only in power by gaining support from the ultra wealthy. It would be better, and I do not oppose these fixes, but it wouldn't be complete.