~snip~
Madrid we know as the favorite team so far when playing in the UCL, but if we look at their performance this season, we have to admit that they are not in perfect condition like the previous seasons, so although Salzburg and Brest are not teams on the same level with Madrid, but we cannot underestimate them, especially in the last match of the league phase, In my opinion, the pressure and burden will actually be on Madrid side later in the match, because indeed their position is still difficult to qualify for the next round.
Currently Salzburg and Brest need to focus on mental and physical preparation to be able to overcome the pressure from Madrid like you say, in addition, the right strategy and the ability to stay calm under pressure will be very important when facing a big team like Madrid.
I am also sure that Madrid will be able to win the remaining two matches, but I think the victory will not be easy for them to get.
Maybe you are a fan of Real Madrid and that's why you think Real Madrid is the favorite team for the Champions League but I think even in the past years Real Madrid had strong competitors and they just won the titles in the past because they have much more money than many other teams in this tournament.
Now even spending money couldn't solve anything for Real Madrid and you can see because of having many injured players they are not in good form at all and I think teams like Liverpool can have more chance than Real Madrid to win the Champions League title.