A desktop publishing application from Microsoft that focuses on page layout and graphic design.
You may want to look into using Affinity Publisher. It's free.
You can supposedly use it to import and edit your Publisher files, if you first convert them to PDF. See https://www.affinity.studio/
But you may get better results, if you convert the Publisher files directly to Affinity using https://markzware.com/markzportal/converting-microsoft-publisher-to-affinity-publisher/