A desktop publishing application from Microsoft that focuses on page layout and graphic design.
As far as I can see, there is only 1 decent alternative: LibreOffice Draw.
It has the best compatibility with your older *.PUB files.
When Microsoft let us down, I guess it will be go to alternative.
> check it out four your self. It is in the LibreOffice suit (you can not download it individually, but you can create a desktop shortcut toe LibreOffice Draw).
https://www.libreoffice.org/discover/libreoffice/
Greetings
Jef