Not all teams that dominate a match are able to win that match. This was experienced by Real Sociedad today where they really dominated the game with a high percentage of ball possession, total number of shots, shots on goal compared to Villarreal. This was clearly unexpected because Villarreal was very lucky with all their chances, so Real Sociedad really had to regret it.
The following displays the match statistics:

I am still not surprised by the results obtained by Real Sociedad because this team has declined so much this season and I think the club management must act quickly to replace the current coach. All the results obtained by Real Sociedad cannot be said to be good and even though currently they are still quite safe in 6th position, soon they will definitely be knocked out of the top 10 of the standings. So many teams below them have overshadowed them and the difference is not that big.
Even though they had won in the previous match, this did not mean that Real Sociedad could win again even though they were playing at home against Villarreal. However, Villarreal, who came as a non-seeded team, was able to win easily in this match, even with a fairly landslide score. I think Real Sociedad must improve as quickly as possible before it is too late because looking at the existing competition makes their chances of being able to stay in their current position even smaller.