How to remove directory from wordpress url?

Question

WordPress

When creating a site on the host, I had to create a directory so that each site was in its own folder, but because of this, the faces of the sites are located at site.com/dir/
How to exclude the folder directory from the url to bring the face (and other pages) to the form site .com/?
Moving to the www folder without creating a directory is not an option. >1 site is on the host