Seems like there are far too many people on the make for them to bother fixing VAR. What's stopping an official from getting a mate from sticking a bet on a game and the official then changing a referee's decision to suit? A VAR decision can single-handedly decide the result of any game, without fear that they'll be punished for any incorrect or decisions they make that are so obviously wrong.
Should be two separate VAR officials in separate locations, not in contact with each other, and decisions are only made/changed/upgraded etc if both VAR officials make the same decision.
Or just get rid of all of the corrupt British officials whose mates play in the Premier League and ship in an unbiased set from Africa or South America or something and pay them with rewards for the fewer controversial decisions that are made.