Saving/retrieving to/from google drive

I have saved .odt and .ods files directly from office writer and office spreadsheets to google drive. They are not showing up in the google drive when I try to access them. Google says to go to LO support for assistance, They support .odt and .ods extensions, and when copying form a local drive to google drive they appear but not when saved directly. How do I access these files?

At first I’d try to open them again from the same LibreOffice, wich saved the files. In some cases access rights are restricted for reasons of security, so other apps can not see data they have not created themselves.