Is it possible to have a full team site for a group created in Outlook or Teams ? (SOLVED)

This is differet stuff :-) and let me explain what is happening:
(1) Today when you create a site from the SharePoint landing page, it's created under the SharePoint root site in your tenant. This is going to change when modern team sites are released (being rolled out currently to first release).
(2) When you create a Group a Site collection in the form https://<YourDomain>.sharepoint.com/sites/<GroupName> is created for you.
(3) Today it's true that Groups sites seems to be limited compared with sites you create from the SharePoint landing page, but this is changing and no matter where you create a site you are going to have the same experience when working with it