Substitute original WordPress url by another domain name
I do have a very basic question, but struggle to understand things.
I do have a Wordpress, host on WorldLite by Planet Hoster. Url is something like mysite.go.yo.
When I go to a post, url becomes mysite.go.yo/my-awesome-post.
Now, I simply would like to switch from mysite.go.yo to something more sexy, like mysite.com. I am just talking about the browser url display, purely cosmetic, not actually moving files. I would also like that links appear as mysite.com/my-awsome-post rather than mysite.go.yo/my-awesome-post or always mysite.com.
I do have the domain mysite.com with OVH but I clearly struggle to get desired result. Is it possible to achieve expected result when domain name is not host by the WordPress host?