You can download a free import and export of .DXF from the Extension warehouse that works with any version of Sketchup. Personally yes I have Sketchup Pro but I also have the free version on another computer and it works just fine.
I like this Sketchup export / import extension:
https://www.guitar-list.com/download-software/convert-sketchup-skp-files-dxf-or-stl
the site explains how to download / install it. It exports and imports very easily.