I think Real Sociedad's chances of winning this match are very big, especially since they are playing at home, and currently Real Sociedad's performance is very good and now Real Sociedad is in 6th place in the La Liga standings.
And Mallorca is a team that is clearly below Real Sociedad in terms of quality, so far Mallorca have only been able to win once in the 9 matches they have played.
So I have no doubts about Real Sociedad's victory in this match and I even predict that this will be an easy win for Real Sociedad.
It might be quite easy to win for Real Sociedad, but it might only be a very small score because of the results of the meetings between these two teams in several matches that have passed in previous seasons. Real Sociedad very rarely wins by a lot of scores against Mallorca and could even possibly draw if Mallorca is able to create a better game at home to Real Sociedad. However, I still have more confidence in Real Sociedad's performance in that match because Real Sociedad will not let Mallorca win or draw at the Reale Arena.