[....]I also don't know for sure whether the VAR decision for the goal scored by Garnacho was correct or not because after that incident it was Arsenal who managed to turn things around.
What are you trying to say here? Arsenal's last two goals has nothing to do with the disallowed MU goal. If you have a problem with the call then point it out on a technical level and not come of as someone saying MU was robbed of that goal so Arsenal could win. Garnacho was offside by the slightest of margins.
If in the Manchester United vs Arsenal match there are still those who blame the referee's decision, it is a sign that the Manchester United fans are trying to dismiss and do not want to accept the fact that they lost to Arsenal. Even though many of Anthony Taylor's decisions are often controversial, in that fight, in my opinion, he showed fairness and professionalism.
It's such a common sign in the football. The winner has no comment regarding the decision from the referee while the loser will be complaining about some horrible decisions taken by the referee.
It's only wasting their energy if they blame referees for this. I meant even though if referee was making the wrong call to the match between arsenal vs MU. The referee will be only apologizing their mistakes.
The scores will not be changed. MU fans just need to move on from this kind of situation. They shall have blamed ETH for worst decision by putting meguire and evan in.