The only average you can get, is one that speaks to the Cost of Living indecies. However, these neglect the daily incidentals.
GAs is tracked, but lunkc and soda pop is not. Tell yo uwaht,
This is a very extensive piece of research.
You would have to give my your shopping basket, and I would have to research each item.
For example: Gas is tracked. We know for example that the average american is spending 35 dollars a week for gas.
However, to find out how much is spent on soda pop, I have to reserach the soda manufactureres who have that data.
I would have to reserach for bread and milk, and cheese. lunches are tracked for school lunches, but I am not sure you will find lunches for everyone.
Here is a sample of the Cola spending reports. So We can research individual commodities.
However, most economists will only track categoreis, for example: how much is spent on food, clothing, transportation, etc.
This is not a simple question you are asking.