Oh wow -- I'm surprised anyone doesn't know this. OK, let me explain via example. A bunch of scientists come up with a theory and test it exhaustively. Maybe a couple of the tests don't verify the theory, but the vast, vast, vast majority do. So, they call their theory their theory a "fact" -- e.g. the Earth is [more or less] a sphere.
An "alternative fact" is a "fact" that disagrees with the other facts, usually because the person doesn't "feel" they are true. For example, "The government is trying to tell us the Earth is a sphere to control us, when it's obvious the Earth is flat." And this "alternative fact" is every bit as valid as the actual facts, because, of course, one "feels" that it is.
It makes so much sense that I'm surprised I have to explain it.
Yeah, but what if I don't "feel" they are right? My feelings count as much, if not more, than their "facts". Or are you just going to keep living your life the same as the other sheeple do?
🤣🤣🤣