Apple's Pages, Numbers, and Keynote are not clones of the Microsoft applications (e.g. Word, Excel, Powerpoint) whose documents they can open and translate into Apple's document formats. Keyword here is translation as Apple does not guarantee that the translation will be accurate or even successful depending on the content in the Microsoft documents. The original Microsoft documents are not editable in Apple's applications and one must then export to the appropriate Microsoft document format with the very same caveats on the export translation process. The fact that what you have created in Apple's applications may not appear the same when opened with Microsoft applications and that may not be universally pleasant.
Yes, the free LibreOffice Suite is a clone of MS Office; can open and save in Microsoft document formats, or export to PDF. But, it comes with a steep learning curve backed up with competent documentation written in LibreOffice Writer.
There is also the paid (free trial) Softmaker Office 2024 or Office NX in single purchase, or by subscription that has a more faithful visual interface to Microsoft applications and can natively open Microsoft documents. It too, has product documentation. These applications can also export to even more PDF variations than LibreOffice.