#3 Track Back
Tracking back always is not just to win a lost ball. It is also to keep the intensity of a match going. Also, once you show your work rate to the crowd, they will lift you in times when you are feeling low. Jurgen Klopp's team is the best example. Other than Salah, all the other forward players never miss a chance to sprint back and demand a pass.
Ozil needs to show that urgency sometimes. That he doesn't enjoy defending is for all to see, but he can help himself by putting in a shift to help his midfielders and more interestingly make the crowd love him again. Unai Emery is very demanding in his tactics and Ozil needs to pull up his socks if he wants to be the no1 player at Arsenal.