Having the perfect domain name depends if it’s registered already!
You can visit nearly any domain registrar to find out.
WhoIs.com will tell you if someone has already registered your domain. It can also tell you WHO has that domain!
I recommend NameCheap for purchasing your domain, or URL.
Remember you can get creative by purchasing the .net and .org if you like as well. People aren’t used to using extensions such as .store, .photo, and .health, but they may be in the future!