Great answers.

Elizabeth

Hi All. I noticed you're a premium member. You are able to have 9 more websites. Park this one and start another. When the yearly payment comes up you can decide if you want to keep it or not.

Once a domain name is registered, it can't be changed. So if you don't like it, you should get a new one.

Would you stay in the same niche and want to keep your already published posts?

You do not like, you cant write content for it. But you could still continue using it as you think of the best choice you would settle with, then you purchase a new on and migrate data.

all the best of luck
Mellon

Likely need to buy a new domain. What is the existing domain that you don't like? More important is writing content with good keywords that help you rank in Google.