If Team Deathmatch or Battle Royale suddenly stops during loading, it is highly likely that network delays occurred at the start of the match-matching process. In this case, the game may start a bit later, but you can proceed with the game mode after a certain time.
To help prevent these kinds of connectivity issues, we highly recommend making sure that you are connected to a reliable WiFi source since playing on a device's data plan does not communicate data between the device and the server as quickly and reliably.