Sandee,
You could just do app for tv, and computer for on-line, my dumb tv is smart through WiFi connected DVR/Player.
I can cast to TV from iPhone or computer. Or most computers with HDMI ports like my desktop or laptop allow porting to TV as monitor.
As long as you remember to do updates on your tv, DVR/p or other devices you should remain relatively pure from malware, viruses, etc, As they’re all on the same WiFi network.
My situation is probably different from most, my over the air antenna in the olden analog days picked up most TV stations, now in digital form I only get 2 stations in Quebec from Maine.
My local/220 channels is now Dish - $40.
My Broadband is $40.
Cable internet is $20 month vs $500 month for nieces in Boston.But, they have the dreaded bundle deal tv, internet and telephone service.
But, I dislike the speed offering in rural Maine using cable.
Froze
And yes, after long days/nights, I'd still like to swing these hunks of glass , plastic and silicon against the nearest wall Come on retirement!