Villarreal have 4 wins and 1 victory in their last 5 matches. As you emphasized, the draw has become one of their characteristics in the last weeks. On the other hand, Real Sociedad have not had good results in recent weeks. They have only 2 wins in the last 9 weeks. But I'm sure they want to finish in the top 6 of the league. I think they will be the favorites in this match. Or I can consider goal betting options for this match. They are safer options in such matches.
Real Sociedad might be eyeing victory but I'm sure they will play more carefully because this week Sociedad will play in the Champions League so they need a fit player prepare enough rest and avoid injury, on the one hand Real Sociedad doesn't want to lose points in La Liga and on the other hand Real Sociedad wants to take place in the Champions League. I think the worst thing that can happen is the two teams draw today because both of them need points to secure their respective positions in the standings.
After all, because in the current La Liga standings, Real Sociedad is in a better position compared to Villarreal and also, in this match Real Sociedad will play at home, of course Real Sociedad is still the favorite team to win. Not only that, because in reality Real Sociedad also still has good results or dominance in the head to head record of Real Sociedad v Villarreal.
But indeed, even though Real Sociedad is superior in all existing factors but yes, it still doesn't seem like it will be easy for Real Sociedad to beat Villarreal, but it's just about not completely easy but basically Real Sociedad still has a chance to win. Because, so far this season, Villarreal has not been very good in away matches, even though previously Villarreal managed to beat Barcelona, but I think it is difficult to have the same good performance and results. Therefore, I believe that Real Sociedad will not lose in this match and yes, a win for Real Sociedad or just a draw can still happen in this match.