Well, the recent match of Furia and NaVi isn't all about NaVi against Furia. But it was NaVi versus the entire crowd or let's say that it was against the entirety of Brazil.
It's really hard to go against with a crowd and you don't have a sound proof room. The stage was open and those crowd cheers were disturbing and pressuring Navi.
Exactly. I get that the fans are looking to root for their brothers, but man that is just not a good thing to distract the enemy team just because you are siding your countrymen. Hopefully these events in the future will have a soundproof room, or at least a room wherein the sound is significantly reduced so that the players will not get distracted by any chance. It's a bad thing that this could have been easily a great match wherein both teams will be giving their all, but the audience is just not in favor of Navi and are obviously giving sound cues to Furia which, in return, helps them significantly.
It can be helped and the visitors, even they're the best team. They can get easily distracted that will result to their standing and performances.
That's why whoever controls the crowd even if they're running short, they still have a high chance to win and thanks to the fans and countrymen out there to cheer for their home team.