I can tell you that I've heard from what I consider a more reliable source than an anonymous FB page that VAR was NOT working on Sunday (and there's been a few other games where it hasn't been working) yet PGMOL are maintaining the fiction (i.e. lying) that everything was normal. The fact that there was no on-screen review of the possible offside against Salah should be further proof that it wasn't working.
The clubs knew, PGMOL and the match officials knew, the broadcasters knew and all maintained this lie and continue to do so. So if they'll lie about that, what else will they lie about? Match fixing, official corruption, players being controlled by gangsters? All of those and more.