The ref was terrible. I don't have a problem with the penalty - if it was the other way I'd absolutely want it given. But the way he let Cucurella foul Saka constantly in the first 10 minutes set the expectations for the rest of the game. Good refs are not ones who get all the big decisions right - no one does. Good refs are ones who don't listen to the home crowd on the niggles.
This said, we were poor, and poor at the things we're usually good at. Maintaining possession and pressing. Chelsea will finish the year outside the European places again IMO.