Wines created in one area can be outstanding one year and yet the subsequent year they are simply dull owing to deficit of rain, or excess rain and many other aspects that have an effect on the vineyard.
If you are still studying wine, you might not know which years are good and which wines are much less appealing. This takes practice. A proven way is to find out from your wine seller what they would recommend. One bottle of Cabernet wine produced by a vineyard in one year may be magnificent in your own estimation but of poor quality in the opinion of other people.
Asking questions is nice however depending on views of others totally is not good. Whenever you don’t enjoy it, don’t choose it doesn’t matter how expensive it happens to be or just how much the wine vendor brags over it.
Do not slavishly follow rules or drink wine you do not enjoy based on its price. Enjoy it and soon you’ll be buying with confidence.