403 Forbidden my site

Hi and welcome to the forum! If you want your WordPress website to work on /, you’ll have to move the files on your htdocs folder from the folder you uploaded that contains the WordPress files inside it always inside the htdocs folder, then perform the manual installation as usual.

If the problem isn’t that, I think you should read this article:

Or you can simply use Softaculous to install WordPress. Like so, you’ll save time in something you’ll have ready in minutes!