Opening a Libre Writer document in my Android Tablet is not possible

I have Libre Office 5.0. and I can’t open my Writer documents in my Android Tablet by Verizon when I save them to Google Docs in their cloud. Is there a way to convert the Writer Documents to another word version document I can use on my Tablet and then save them on my laptop where I work on them?

You can download from Google Play Store a LO version that allows you to view and make some editing in your documents.

Libre Office per Android is only a viewer, instead there is AndrOpenOffice. But it is not very friendly.