Hi Rosm2004,
Thank you for posting your question in this community. If you received a community rely notification email about call “Microsoft support”, please do not call the number due to the privacy concerns, it is a spam. We have deleted the message
and reported the spam user.
Based on your description, you have some concerns to edit PDF files with Microsoft 365 applications.
As you may know, PDF is a Portable Document Format which is developed by Adobe. Hence, if we need to directly edit a PDF file or modify its format, we need to use the programs provided by Adobe, such as Acrobat Pro as you mentioned.
If you tend to edit in Microsoft 365 application, such as Word application, Word has the feature to help you
convert the PDF file to an editable format in Word application. Please take note that, the format may not be perfect after you convert in Word.
For your information:
Edit a PDF in Word

At meantime, I also find some similar threads about editing PDF. Some community members have shared their own experiences with some third-party add-ins or programs. Please have a look at your convenience. Hope it helps.
For your information:
edit PDF file
how to edit pdf file
Best regards,
Dihao