Fortnite Zone was it playing alone?

I like to play zone wars with my friends in creative mode Fortnite but then some strange people always come in and play with us. Is there vll a solution that you somehow make the game private etc?

Go to the lobby together and choose not to play but to create in creative mode, then you will come to a private lobby. Then set the zone wars map at a rift, do not go to matchmaking!

Ok thank you