file permissions

Hi everyone, I am new here but it looks like I am going to be an active member of the community since it is my first time dealing with OLS. The company I work for acquired a web design agency and their servers. One of them is a CentOS 8 with OLS 1.7.16 installed. It hosts 30 websites...

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

When users upload files (e.g. plugin/theme patches) via SFTP (filezilla), the file owner/group gets set to user:user and the permissions are taken from Windows 10. This is causing a ton of issues with wordpress. How can I set up my OLS server (Azure > Ubuntu via the official Litespeed cloud...