Regardless of anything the game against Sociedad is a tough game and it won't be easy I think because Sociedad is also still one of the dark horse clubs even though they can't compete for trophies but they are a troublesome club for a big club.
The actual match was worth watching even though Lewandowski scored but it didn't make any difference. But other than that, this still doesn't interfere with Barcelona's good results this season.
Yes, it's true, Real Sociedad this season has appeared very strong, especially against teams like Barcelona and Real Madrid. But in my opinion Barcelona should win the remaining games until the end, because winning is more important than losing. they won the championship but that doesn't mean they have to cut their slack, this mentality will haunt them next season.
if they play like there is no motivation to win and don't try to win the match, It doesn't care about the final result even friendly match IMO is just as important. Barcelona have to win the game no matter what it's very important to keep the mentality.
But whatever it was, there were two good things even though Bracelona lost, firstly helping Real Sociedad qualify for the UCL zone, secondly helping Lewandowski get El Pichichi. Do your best until UCL, Sociedad! And congrats on the Laliga Title for Barcelona.