Red alert on the food section! This means food production could not keep up with the number or the upkeep of troops in your city. Even if you gather a lot of food, it would just disappear overnight.
What you could do is focus talent on the Upkeep Reduction and Food Income.
The next is to get the Champion equipped with equipments that enhance Food Income specifically or generally increase Resource Income.
Or get equipments that lowers the Upkeep. Alrite now 💪💪