If it was built long ago and is not meeting your business objectives, it must be out-dated. A website must be able to attract visitors, generate leads for you and ultimately increase your sales.
The most important step in setting up a website is to define your goals clearly. What is the purpose of having your own website? Should it make it convenient for users to buy from you online? Or do you just want customers to seek information about your products?
Also, Google is constantly changing, and websites need to adapt to these changes as well. Hence, make sure that you revise your online marketing strategy by optimizing your website.
Whatever is it, you need to redesign your website.