Install a Fabric Snapshot 21w05a server through the Control Panel (Servers → Select your server → Game servers → Add Game Server → Fabric Snapshot 21w05a)
the server is not laggy at all, but I advise you to take more RAM, I bought a server like this for the first time, and I want to say that it is pretty cool, I just took a less expensive plan, for friends such a server will do.