Why doesn’t “PAGES” have flowchart templates. I wish PAGES just had flow chart templates

These are fellow user supported communities and the Apple product teams do not participate here. Thus, we cannot provide product design why answers. You can use the Pages application menu to provide direct feedback to the Pages product team.

Even MS Word does not ship with Flow Chart templates, but does have specific flowchart shapes you can insert into the document. Pages does not offer flowchart shapes in its shapes library.

The free LibreOffice Writer application has flowchart artwork in its Gallery.