When I opened and tried to edit files, The pop-up window read, “Error saving the document Passwords:Object not accessible. The object cannot be accessed due to insufficient user rights.” I did notice on the main menu toolbar the “Window” tab there is a filed ticked as “(read-only) Libre-Writer.” After two days i finally discovered that it was due to my dual boot with Windows. I booted in windows to play games, then shut down and booted into Linux mint. Then when I went to use libreoffice and other programs, I would get a error telling me that I was not the owner of the files and couldn’t modify or delete them. At first it seemed Windows renamed my files and permissions but I found this
https://www.howtogeek.com/349114/shutting-down-doesnt-fully-shut-down-windows-10-but-restarting-it-does/ and https://www.google.com/amp/s/www.howtogeek.com/395334/how-to-stop-windows-10-from-reopening-the-last-open-apps-on-startup/amp/.
So this is more of a fyi for anyone who has similar problems.