@MedeaVanamonde @anatanana have you hosted a blog on WordPress.com using your own domain, or a Website on GitHub Pages? Like that. There's a network service that lets you publish things, and instead of using theirdomain.example/username/ you use yourdomain.example/username/ . Usually by creating a CNAME to their servers.
If you are not used to thinking about websites or domain names or all that stuff, it's OK to just skip the question.