I’m not sure if i get you right, but… HDMI is kind of an one way street. You can’t send any signal / data from your TV to the laptop that way. So you can’t control your laptop through the TV remote. If you hook up your TV through HDMI it becomes a stupid monitor. My best advice would be to get a small wireless keyboard/touchpad combo to connect to the laptop. Maybe a remote control you connect to the laptop will also do.

Easiest way is to use an Indivious instance, if you are on desktop or use the Newpipe App if on Android.