When a cat arrives in a new environment, it becomes anxious and stressed due to the unfamiliar surroundings, which can cause it to stop eating. Simply place it in a quiet place to rest for a few days, and once it becomes familiar with its surroundings, it will start eating again and become very active. 
While the cat is still adjusting to its new environment, the owner should prepare food for it promptly. Prepare palatable and easily digestible food, such as canned cat food or wet food pouches. After all, if the cat's appetite is not very good, it's good to prepare something delicious for it to eat.
After the cat adapts to its environment, you can feed it some probiotics to promote intestinal motility. Also, it's best for the owner to spend time playing games with it. Usually, it will eat when it gets tired of playing.
