If you have Amazon Prime, it is well worth looking at the Fire Stick. You get Prime TV, which has hundreds of series and films. It is a one-off cost and plugs into the back of your TV. I think you can use it without Prime, but that opens up lots of extras.
Netflix is also pretty good, but you do have to pay extra for the apps that let you stream the shows.
It might be worth investigating sooner rather than later, if you would want someone round to help you set it up. We set it up for my mum a while back, before the pandemic. She only had basic TV and Freeview before that. It has such a boon for her while shielding. and she found lots of stuff she really enjoyed.
I only watch the BBC if OH has it on for the news or the breakfast show, but I have a tolerance level of about 5 minutes before I get sick of the bias and blame game and go and find something else to do