Like has been said. It's not VAR that's the problem, but the humans applying it.
They should just come out and say, we're only using VAR for offsides, goal-line tech, fouls inside/outside the box, mistaken red card identity and nothing else. Basically all objective calls.
There is no point talking about stepping in when a "clear and obvious error" has been made, because that's subjective. And as we've seen this year, when those clear and obvious mistakes have been shown on TV, the VAR does NOT overrule the referee; I don't think they've even asked him to come over to the side of the pitch once, in any game.
That Arsenal handball last night was one of the clearest handballs I've ever seen, and yet the referee wasn't even advised to go and see it. It's a complete farce!