Sometimes it’s the client and other times it the product that are the reason for not making as many sales as you would have hoped.
Firstly, when it comes to client. Sometimes it’s the numbers game. Some client see a need for you product in their lives while other don’t. So you just have to keep looking till find the right person. i.e. the person who values you product more than their money and they are willing to take in that voluntary exchange with you.
Secondly, the product you are trying to sell is not valued by the society as much your competitors and therefore you fail to make any money. May the company needs to innovate and come up with product or service that the society want and that improve their lives?
In conclusion, you have to learn to fail to win. Fail to sell bad product in order for you to realize you product is not good enough and you need innovate.