Yes there is still opportunity for Argentina to advance to the next round. If and only if, Argentina were able to qualify for the round of 16, I consider supporting them for the rest of their game. Remember Portugal on EURO 2016? They had a bad start but they were able to win the event. Maybe the pattern will be repeated by Argentina in this world cup.
Unfortunately, patterns don't exist in football, every match is different, every team is different, and every competition is different, so we can't really compare that Portugal with this Argentina. I think Argentina is going to qualify to the RO16, but I don't see them winning the whole thing, they've been looking awful so far. the Belgium defence doesn't exist and this point will make them lose easily in the next games.
Their shaky defence is going to be crucial in the knockout stages against any decent team with good attackers.Argentina is already out after Croatia :
Nothing realistic can happen for them to continue, also Messi is destroyed, he is getting humiliated by Cristiano and it's showing how Messi collapses in pressure when he plays for the national team. He is too comfortable in Barca and it's just going to be sad to see Messi never win a World Cup. Without a World Cup Maradona stays the best ever or at least the best Argentinian player ever. You have to show some versatility, winning always on the same team is not enough. I hope some miracle can happen for ARG.