I cant see my website under my domain just under the netlify domain

I have purchased the domain name: randvoll.me
I´ve created some simple design.
When i want to search for my domain, it just shows that its registriert, but under randvoll.netlify.app i can see what i´ve created.
How can this be fixed?

Im new to this and German, so i might not understand everything in the first place.

Thank you all for your help :slight_smile:

@agent_rangit The documentation is here: