I have a Sony Bravia KD-65XF9005 (2018) and I'm using a Google Home to give commands like "turn my TV on", "open YouTube", "open Netflix", etc. All works well most of the time. But after I turn off the TV and leave it like that for a few hours, next time I say "turn on my TV", Google Home Responds "It looks like your TV isn't available right now". I found out that the TV lost internet connection during that time, because if I turn it on by pressing the remote control power button I can see the "no internet" message and after a few seconds, the message disappears because it connected to the internet. Also, Google Home can find the TV from this point on.

So how can I prevent my TV from losing internet connection while it's turned off for a long period of time? Is there a setting I should enable somewhere to keep the TV more awake? And why doesn't the TV automatically reconnect to internet in the background like a mobile phone or some other device?