Nextcloud doesn't display created folders, on the server

I use Nextcloud 20, I made an access on my server where Nextcloud is and created a folder in my profile (folder), however it was not displayed in the main interface of the system.
I have already given the permissions chown -r www-data: www-data folder/, but it still doesn’t show.
I soon on my server with root user only.

Do they have any other place to place permissions?

So you created folders on your userspace through CLI? This is definitely not the recommended way to do so. You should create folders through the web interface thus will also update NC’s database entries accordingly.

You might be able to make those invisible folders visible by running through CLI:

occ files:scan --path=<username>