Is it possible to create Project pages, like it was:
without my username in it (and not to be an "organization' actually)? If so, how can i do that?
@kerrtrvs is correct. The standard GitHub Pages domains will include the owner of the repository, whether it be a user or an organization. This is in large part because two different users could have a repository with the exact same name. In fact, this happens often due to forking. So to have the URL just be the name of the repository would cause conflicts.
Hope this information helps!