One thing that we know is that oil and gas have a finite supply. We also know it takes millions of years to replace them. When they run out, if we do nothing to abate the consequences, what will the world be like?
Without oil we will have difficulty getting fuel. Planes will be grounded, and not just those bringing passengers from an affected part of the world. The entire planet will be impacted.
Without oil unessential cruise ships will be docked. Fuel will become too precious to use for recreation.
Would lack of oil be significant in interruption of the food supply? Well, it might be necessary to divert fuel to farmers for their machines to produce the food, and to trucks to haul food. But expensive fuel might push most items out of the price range of many. The variety of food one now can select from might be reduced to whatever is produced locally.
Many power plants still rely on oil or natural gas. Yes, there is a call for clean renewable power, but the call is too often unheeded. It will not be that if you live close to a power plant that uses renewable power you will have all the electricity that you need. Power will be diverted through the grid to places such as hospitals many miles from your location.
Any disruption to essential needs such as power can disrupt the economy. Companies can fail. This further limits what you can purchase if you have the money.