Sorry, but those answers don’t cut it for me. The only way to fake it is to have an anti gravity chamber on Earth, which I don’t think is possible. Did you actually watch the video?
Are you really this dense? it doesn't cut if for you because you're brainwashed.
I know people who rode on the so-called vomit-comet, and you can do all that. You can find videos of them doing the same stuff that you see in IIS videos. Do you even know what an "anti-gravity" chamber is? On earth it's simulated either by a diving plane (like NASA's vomit comet) or from drop dowers.
No, Bolt was not on IIS nor were the "astronots". They were exactly where they usually are when filming "ISS scenes".
Have you never seen Hollywood movies about space? So those are done in an anti-gravity chamber? Those are done with a combination of harnesses, green screens, and a number of other techniques, including more and more just straight-out CGI (which is becoming impossible to distinguish from reality).

[warning: some immodesty]