Which one should I buy for the game server?

[DabasarusRex]

Hello, I am trying to create a mobile game in Unity and have completed the game, so to speak. I then decided to make it multiplayer. It would be my first time going online. I created a game server through Visual Studio and set the IP address to localhost, which is 127.0.0.1. I can connect to the game simultaneously from my PC and Unity, so I have achieved my goal. In short, in order to globalize this, what do I need to get? Should I get a VPS? In my research, I found that this is what I should get. If not a VPS, what do I need to get? Or what do I need to do? How do things work on regular servers for these matters?