How to access my site without a domain?

I used Wordpress One-click application. Then, I opened my site in my web browser via its IP address. I configured it without a problem. But when I connected to my droplet via console, it prompted me to introduce a domain. Since I own a domain, I didn’t think about it and I just wrote it. However, then I realized I didn’t want my site to be available on said domain until I finished the webpage. Now I want to turn back, because I can’t access my site from the droplet’s IP address and neither from the domain (which is expected since I haven’t and don’t want to associate it with my website in my registrar yet).

How can I configure my droplet so I can access my website using only its IP address? I tried changing ServerName and ServerAlias on sites-enabled and sites-available to the droplet’s IP, but it didn’t work.