While CPQ can help you improve your sales workflow and quoting process, it won’t be able to help if you lack an understanding of what products you want to sell and how they need to be configured to best serve your customers.
As with all automation tools, CPQ software can help you build a reliable system that you can use to create standardized pricing and keep everyone on the same page.  It can even gather data for you so that you understand what your reps are selling and how often.
If your reps aren’t recommending the right products or lack the training to cross-sell or upsell solutions that make sense for the customer, CPQ software is unlikely to resolve your issues.