Basically supply always meets demand in a market system.
Example: There are 10 bottles of water for sale at a price of 1 USD per bottle. Now 100 customer show up and want to buy a bottle of water.
What is the situation now: The customer start bidding for each bottle of water and the highest bidder gets 1 bottle and so on until all 10 bottles are sold. Supply meets demand at a certain price point
If you start to argue that you want for example a new car and like to pay only 5 USD per car, then of course there is a mismach between YOUR desired price point and the available supply of cars for sale at a market price.