[....]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.
Many people are viewing some circumstances through the lens of emotion. The VAR intervention on Garnacho's goal was because there was a possibility of offside detection, and they confirmed that Garnacho was off, which is why the goal was ruled out; additionally, Manchester United fans were relieved that the Havertz penalty incident was overlooked because they believe there is no contact and have forgotten how Refree helped them against Nottingham Forest and Wolves earlier this season. As far as I'm concerned, the game was impeccably refereed, and the goals from Rice and Jesus had nothing to do with the referee's decision.