Barcelona can also compete for gold medals this year. Sevilla, Betis are not rivals for Barcelona and the Catalans can easily get around them in the standings. Real Madrid is now in decline and losing points. The difference between the teams is large, but not critical.
You must be joking? Until the end of the championship 14 games. The gap between Barcelona and Real Madrid is 10 points (assuming Barcelona win the matches it has in hand). Even if Barcelona played better than Real Madrid, they would not have a chance to become a champion, but they play much worse. I think the bookmakers accept bets on the Barcelona Championship with odds of 50 or more. If you believe in this option, then you should bet.