HelloPlease could you advise me about what could suddenly be causing the note 10 lite to shut down mid activity eg playing scrabble or gin rummy... I lose the game.#SignalLoss

Hello Please help.I did the recent upgrade.I have restarted the phone.Yet, the volume 樂 will not work. I have done as much as I can, but clearly I am not fixing the volume. Nothing moves on the screen. TIAMich173