I'm not too sure there, it looks like you can still see all of Mane's boot and the slight bit of contact is in the back of his shin. He may have had his foot stood on slightly but he then carried on before throwing himself over which is what my argument is, he could be should have carried on as he still had control of the ball but his first option is to go over unnecessarily. That was possibly a penalty and possibly a dive but VAR gives it as the player fell over, he didn't fall over because of the contact he fell over because he decided to, the same with Mahrez. That's where VAR isn't working, it's making sure that players have to go over to get a decision but if you play on, like Silva did then you won't get it. This disproportionately rewards teams who have made diving part of their playing style (like Liverpool have under your last two managers).
I mean, we've had 4 penalties this season. The same number as Man City and Leicester. I don't really see how we are being disproportionately rewarded for diving?
United, on the other hand, have 9 already.