firebase observe not running in background with swift - swift

Question

I am pulling data from firebase realtime database with swift. Everything works fine when the app is open. I am running the loadGame function. After running the observeGame function everything is fine. But when I press the iPhone screen off button and dim the screen, observe is not triggered. (sometimes it works but mostly it doesn't).
After waiting for a while, the application gives an error when I open the screen. because firebase cloud function has changed its database but refStateDate.observe is not triggered so it can't fetch new data.
Note: I'm not killing the app. Shouldn't it be running in the background? I just turn off the screen with the iphone side button.
class startGame{
func loadGame(){
/// some code
fullScreenLoading.shared.isLoading = true
DispatchQueue.main.asyncAfter(deadline: .now() + 1) { /// removing it doesn't fix it either
GameHomeManager.shared.CreateGame(game: game){
fullScreenLoading.shared.isLoading = false
}
}
}
}
class GameHomeManager: ObservableObject {
static let shared = GameHomeManager()
#Published var games: [ActiveGameModel] = [ActiveGameModel]()
func CreateGame(function: String = #function, game: ActiveGameModel, completion: #escaping () -> Void) {
/// some code
game.initalize(){
return completion()
}
}
}
class ActiveGameModel: ObservableObject {
func initalize(completion: (()->Void)? = nil , function: String = #function) {
/// some code
observeGame() { veriVarmi in
completion?()
}
}
func observeGame(completion: #escaping (Bool) -> Void, function: String = #function){
refStateDate.observe(.value, with: { (snap) in --->>> THE PROBLEM IS HERE. THIS IS NOT TRIGGERING
/// some code
completion(false)
}){ (error) in
}
}
}