I don’t think it has failed generally. The VAR, for whatever reason, decided not to overrule last night’s decisions. Without VAR, all those incorrect decisions would have still been incorrect. The fact that they didn’t bother to intervene doesn’t mean the system should be scrapped. If the referees at the ground and in the studio were doing their jobs properly then the decisions may have been different. No one is suggesting that the on field referees should be scrapped as they made at least 3 bad calls so not sure why VAR is getting the blame yet again.
My main issue with VAR and goal line technology in the UK is that it is trying to introduce perfection into the game when the rules weren’t written for this. Offside wasn’t written to be hair splittingly accurate; if 99.99% of the ball is over the line it should probably be a goal. The new handball rule was plainly absurd when it was introduced. To me, it’s the rules that need amending to deal with this ability to be more precise than the human eye rather than blaming VAR.
VAR has not been successfully introduced in the UK but it is increasing the number of correct decisions and I think that’s good and once they tweak the rules to realize they have this system and apply more common sense when using it, I think much of the controversy will go away.