Chelsea’s best performances were against Liverpool, Arsenal, Spurs and Man City but usually when they’ve come against a lesser team that’s going to be more defensive and less full on attack they’ve struggled such as West Ham, Brentford, Villa and Newcastle
Smaller teams tend to play a low block which Chelsea have time and again proven they have nothing to get past.
Bigger teams generally play more attacking, with higher lines, which is generally more favourable for the few attacking strengths Chelsea have.
Another reason that Ange deciding to just stick with a high line against them is more perplexing. The probably could have gotten a point or better had they adapted post red card, instead of”sticking to his principles” wasn’t giving them the best chance of a result in the game.