In La Liga it really already seems that there is no chance, despite the fact that there are still a sufficient number of matches, but if we assume that Barcelona should lose these matches (albeit not all), which is impossible in principle. On the other hand Real Madrid still have a chance to take the Champions League trophy, and the chance is great enough
I don't see the chance of Real Madrid winning the Laliga league if not Barcelona. The 12 points gap is not small. It's about 4 matches to be precise for Barcelona to lose for Real Madrid to top them. Barcelona has to lose four of their LaLiga matches for Real Madrid to surpass them. Do you think that such a scenario will happen if Barcelona continues in the current form without winning their remaining games, even if they decide to lose four of their games?