usability – Create a customer travel map from person

I was asked to create people and a client's travel map using analytical data and other data online (without talking to real customers).

Therefore, I created some buyer people based on some data (Google analysis, forums, comments from social networks). Now, the next step is to map that into the client's journey, but I lack the technical and practical knowledge regarding this step. Is there anyone who has done this before, from the buyers to the customer's trip?

The requirement is to redesign the website, and it is a retail website.