Argentina created nothing from open play. They were overly agressive all game and that cost them the first goal. They "tried" but failed to materialize any real chances.
As for the penalty appeal for Aguero would have been a joke if called. The brazilian defense covered perfectly the angle and cutted down the pass, it would have been a real sham to give a weak highly questionable penalty that looked more like an accidental contact. If the ball ever reached to Aguero there could have been a real case though.
As for the bump from Arthur to Otamendi, they could definately make a case for a penalty because it's obvious that Arthur blocked him but again the ball is nowhere there, contacts in the box during corners happen all the time and unless they call them every single time (which have never been the case) but it was definately questionable. I give you that and should have been VAR.
First off, let's start with the obvious - off-ball fouls are still fouls.
Penalties are given all the time when players are pulling a shirt of a guy and the ball is coming in nowhere near the two players in question.
Alves on Aquero:
Clear cut foul. Now, yes, Brazilian defense clears the ball, but when the ball is passed forward, neither Alves nor Aquero knows what will happen.
Also, how exactly is that "ACCIDENTAL contact"?
Arhur on Otamendi is a foul even in rugby or hockey, off the ball bodycheck. Otamendi is watching the ball only, Arthur watches only the player and fouls him.
And while, yes, Argentina played some mediocre football, where exactly is it written that sides playing better football always wins?
Or maybe sides playing better football should have refs overlook clear cut pens because the other side "doesn't deserve it"?
Not to mention that even so they actually DID create some chances from open play, including hitting the post twice?
One goal, penalty or not, may completely change a game. Maybe if Argentina scores the momentum changes, maybe Brazil feel pressured to attack and open themselves up for counters, etc.