My colleague in office gets maid-cooked food to office daily and most of the time ends up leaving all or most of it and eating outside because it doesn’t taste so good or he’s bored of it.
But this is just a small scale thing.
In weddings/functions people take or arrange for lot of food and it mostly goes to trash. I’ve heard of weddings where food for 100–150 people is leftover (and that is not considering the food people leave on their plates.
We can all start at an individual level, if I overorder in a restaurant I get it packed and eat later or give it to some hungry kid at redlight.
For any events, if there’s food left contact an NGO like NoFoodWaste - Feed The Needy Help hungry people.
Most of us do not have to worry about whether or not we’ll have food to eat today. However, there’re still a lot of people who just live meal to meal. So plz don't waste food.