files

I am trying to upload (modify, edit, delete) files to the directory with Wordpress using Filezilla, but the file directory does not have permission to write to. I have this mistake /var/www/html/Nouveau document texte.txt: open for write: permission denied File transfer failed

Hi, I'm about to go back eat bananas like my ancestors, because i've been scan nearly every folders and sub's to find my wordpress folder, but no success. There's so many folders in the OLS and on the Google Cloud Platform that i just quit searching. Is there a bug, or should i look for another...