In my opinion, Real Madrid will probably be able to win, because of the bad records that RB Salzburg has had in their last few matches and again they only occasionally win matches in the Champions League, so I think Real Madrid will be able to get the full 3 points in this match, because The opponent they will face is not that strong even though this match is on paper for Real Madrid.
RB Salzburg is very clear this season they are really bad in the Champions League. They have only won one match out of a total of 6 matches played. So yeah, I personally am quite sure that Real Madrid will really be the favorites without us having to doubt it.
The only thing that makes me doubt is the last match in this phase, namely because Real Madrid's opponent in the 8th match is Brest. Brest may not be very consistent in their own domestic league but in the UCL I think they are a force to be reckoned with. So Real Madrid cannot be careless when facing them. But even so, we can still favor Real Madrid because in terms of the quality and depth of the squad, we can still see that Real Madrid is much better.