Can I setup CloudFlare for a game server?

Hello, I wanted to ask - Can I setup CloudFlare for a game server ( FiveM game server )
Well in other words a GTA 5 Multiplayer Online server.

As far as I’m concerned is that CloudFlare only protects against website DDosing and not Game server DDosing.

I don’t know so I ask you guys…
BTW Enterprise plan is absolutely not a option for me.

The enterprise plan is the only option for this, so unfortunately you won’t be able to use CF for DDOS protection of a game server.