The 2 obvious areas that need improvement are, keeping people in front of them on defense and foul shooting, although there are a few other areas that need work. Namely screen setting to set up shooters and finishing in close.
I pay zero attention to the final scores against teams that are completely overmatched and with a huge talent disparity, those games are not the best measuring stick to gauge improvement in weak areas. They played one legitimate team so far and were completely exposed on defense, while missing numerous critical free throws, including front end of 1 & 1s which is akin to sacrificing 2 points.
This cannot continues against talented teams, or they can easily see a 3-4 loss season with a chance at a 10th title greatly diminished.