Christian Faith is not incompatible with the idea that God created others.
I’m not so sure about that; what would that mean for Jesus’ death, burial and resurrection? He can’t very well be sacrificed over and over again for any and all other worlds. One would have to assume that any other worlds would be peopled by perfect, sinless beings, yet the Bible teaches ALL have sinned and come short of the glory of God.
Are you placing your own limits on God? It sure seem to me that you are doing exactly that. Do you actually believe God could Create a much bigger universe and then not be able to manage it? Your lack of Faith is disturbing.