In the end Barcelona won the match. Sevilla's players performed well in this match. Made a lot of attempts to score. Most of the attacks are done by team players. But Sevilla do not have enough experienced players in their attack. This is why Sevilla can't score more than one goal despite attacking a lot. Sevilla have scored just 48 goals in 38 matches this season.
Barcelona played very carefully in this match. Xavi is well aware that Sevilla's attack is not very strong. So Barcelona didn't try to attack much after scoring their second goal. Barcelona played somewhat defensively. And eventually managed to win the match by 2-1.
It was difficult to accept that this was Xavi’s last match in Barcelona, but if you look at how he comments on his dismissal, it seems to me that he even talks about it with relief, as if in the end he got what he wanted. Since Xavi was fired unexpectedly, there are no rumors yet where he can continue his career, but I think that he will quickly find a new club where he will be the head coach, he has achieved good results in La Liga, so there will be many teams, that willing to work with him.