One thing that should on check in this last two matches left by every team, even those teams that are looking not too strong and playing against the big teams will also be fighting in order to get a spot in the playoffs even though they can’t make it to the next round directly. Playing in the playoffs will be like a big record to them than it will be for this big teams, so all big teams trying to survive this stage to the next round will be more careful in the remaining matches. Their fixtures may look very cheap but in reality of the champions league, no need can be underestimated and they should play and treat all teams equal if they really want to go far in this competition.
I have to agree with you because in the Champions League there is no team that can be underestimated. Because all the teams that get tickets to the Champions League are teams that have fought very hard in their respective domestic leagues. So they won't give up easily. And it's possible that in the last two matches there will be surprises that could cause a team that is considered strong to lose.
Because this is UCL, unexpected things often happen here and that is something that is considered normal at UCL. because even ordinary teams can sometimes go further than other strong teams.