Issues with copy function for most docs.

Hi I'm using Acrobate Reader 20.3.0.12688 on my android phone and am having issues with the copy function. I'm trying to copy some pdf pages as is and paste it on Google docs.
When I press and hold on the page, I only get four options : "Note, text, freehand and signature". When I choose Edit the doc, the page is highlighted but I can only add text or images and not copy. The system or copy function only pops up on some documents and not all.