Preview, the preinstalled built-in PDF reader on macOS is a separate app from Adobe Reader. Adobe Acrobat is a paid upgrade to Adobe Reader adding extra features that require a paid license.
Preview supports many paid upgrade features in Adobe Acrobat. For example, deleting pages, creating PDFs from multiple files, etc" - some basic information here: https://support.apple.com/guide/preview/view-pdfs-and-images-prvw11470/mac & https://support.apple.com/en-in/guide/preview/prvw11793/mac - table of contents shows other information and features. I can coach you on the use of these features as desired. Just let us know
Since show is often better than tell I've recorded the following how-to video that I recorded for another user on a similar discussion: https://www.loom.com/share/3a5776e390954228946fc54391256118 In the recording I get into a discussion of annotations and how that works best when sharing with Windows users (versus macOS user).
Since show is often better than tell I've recorded the following how-to video that I recorded for another user on a similar discussion: https://www.loom.com/share/3a5776e390954228946fc54391256118 In the recording I get into a discussion of annotations and how that works best when sharing with Windows users (versus macOS user).