Missing PDF Maker add-in in Adobe Reader DC, even after Adobe reinstallation

Hello, since I had an issue with converting MS Word .docx file to .pdf using the basic exporting function Word -> File -> Save as -> .pdf (the PDF exported hasn't the internal links to headings, figures, tables...), I found out that Word should have an add-in called "PDF Maker" to export correctly .pdf files.

But there isn't the PDF Maker plugin in Office applications, even if checking in File -> Options -> Add-ins -> Manage COM Add-ins -> Go... (see Picture 1)

And also, there isn't the plugin in Adobe Reader DC menu Help -> About Adobe add-ins... (see Picture 2)

I tried several things:

1) repairing Adobe installation from Adobe menu

2) uninstalling + reinstalling Adobe Reader DC after restaring Windows in minimal mode

2) modifying Adobe installation from Control panel in Windows

but the PDF Maker plugin still doesn't appear in Office and there isn't either in Adobe's installation folder (see Picture 3)

I currently have Windows 10 Home 21H2 19044.1645

Adobe Reader DC 22.001.20117 (without subscription)

Microsoft 365 Apps for enterprise 16.0.15028.20228

How can I install the PDF Maker plugin???

Thanks in advance for your help!