Four tickets to the Champions League have been secured by Real Madrid, Barcelona, Atletico Madrid and Sevilla, whatever the result of the match the four teams get will not change anything. Real Betis have also secured fifth position, as well as Real Sociedad who are in sixth place, Sociedad's points acquisition cannot be overtaken by Villarreal who are in seventh position.
In the last game, the focus of football fans is more towards the lower teams. Granada, Mallorca and Cadiz are still struggling to stay in La Liga. Cadiz who are in the relegation zone will face Alaves in the last match. If Cadiz beats Alaves, Cadiz chances of surviving in La Liga are very large.
I am not sure what's going to happen with Villareal. They had a great season last year and won Europa cup, this year they went to semi-finals of the champions league, their manager is beyond this world to achieve such a thing with such team. And now they are going to play in conference league at best.
This is not an ideal situation to be in, if they could get a guaranteed entrance via something else then it would have been great but they didn't so this is going to be a trouble. You need to realize no matter how great you are going, if you can't be at a high level one season later, then why would the team owners spend any money on the team?