I think those who will advance to the next round in Group A are the Netherlands as group winners and Senegal as second place in Group A. because Senegal is also a team of proven quality, they have just won the African champions, what Senegally needs to know is as the first position in the FIFA ranking list for the African region.
The star from Liverpool also comes from Senegal, namely Sadio Mane. Everyone knows the quality of Mane.
Sadio Mane alone can't take Senegal to the second round. And Senegal has been inconsistent in the past. I would still go with Ecuador. They are regularly playing against the best in the world (Brazil, Agrentina.etc), and have performed quite decently in the recent past. My guess is that Ecuador, along with the Netherlands will be able to qualify from Group A. One thing I have learnt from the previous editions of the world cup is not to underestimate any of the CONMEBOL teams. There are simply no weak teams from that confederation.