To watch videos on your TV, ensure that your TV can connect to Wi-Fi or the internet. You can enter the link of your digital access into your TV's browser.
Another option is screen mirroring or casting, which allows you to display the screen of your smartphone, tablet, or computer on your TV.
Here are some YouTube videos that might help you with how to do screen mirroring.
Apple to TV: https://www.youtube.com/watch?v=rGniF02F4_4
Android to TV: https://www.youtube.com/watch?v=f8ynZNwIPR4
Laptop to TV: https://www.youtube.com/watch?v=UJHibecGIOY