It was Granada's quick goal in the first minute that allowed them to play on the defensive and hope for counterattacks. Barcelona had a lot of good attacks, but coming back from 2-0 is always very difficult, and they almost managed to do it, but unfortunately Felix's goal was overturned by VAR. Barcelona should have scored more goals, out of 10 shots on target, two goals are a weak result, but they did not lose and one point is better than 0. Thus, Girona remains between Real and Barcelona, the intrigue for Girona remains.
Yes, the quick goal really made Granada more confident in this match because they knew that the team they were facing was a strong enough team so playing defense was their mainstay for this match. Granada is struggling to get out of the Relegation zone but unfortunately they failed to maintain their best form in this match because Barcelona pressed them quite hard with their attacks. Felix's goal was disallowed because Torres was caught in an offside position. Felix has performed quite well with Barcelona this season, he has found the best team after previously his career was declared unclear, but Barcelona was able to make his name soar again after he managed to show his best performance at the start of this season.
So, if you look at Lewandowksi, it looks like he will miss the next few matches with Barcelona because the injury he suffered requires time for the healing process. I think Barcelona has lost its goal machine and Felix and Yamal must be able to maintain their best form to continue scoring goals when Lewandowksi can't defend the team.