I have a el cheapo 2024 Hisense TV with Amazon fire TV and it does not care if I had it set to HDMI 2 when I turned it off. It always comes back to its own home

I have a el cheapo 2024 Hisense TV with Amazon fire TV and it does not care if I had it set to HDMI 2 when I turned it off. It always comes back to its own home screen. I haven't figured out how to have it stick to my computer when it turns on.