名媛直播

Hello 名媛直播Empire, I?m Pedro and this is my first post here
I?m a beginner and I need your opinion and help please. I think that my bonsai might be sick. For a week now some leaves have been dark and withered at the tip, others have black, brown and yellow spots. one or another smaller leaf turned brown withered and fell. I don't know where I failed. I always watered when the soil was a little dry. I never over or under watered. In the place where I put the plant there is only two hours of direct sunlight a day. The bonsai is a Chinese privet (ligustrum), I have this bonsai since June. Is it sick? If so what is the disease/problem? How should I proceed?

The images are . If you have any problems opening the link say it no problem

please let me know what you think. thank you in advance for your help!