If you cannot find your Samsung TV on the casting list in the Oculus app, ensure that both the Oculus Quest 2 and the Samsung TV are connected to the same Wi-Fi network. Also, make sure your Samsung TV is compatible with casting from the Oculus Quest 2. If the issue persists, try restarting both the Oculus Quest 2 and the Samsung TV, and make sure you have the latest firmware updates installed on both devices.