My advice:

If you feel stuck, try just going a different direction. Explore and find more stuff.

And also, when first fighting a boss, spend the first several attempts just trying to see how long you can live. Don't try to get hits in. Helps you learn the patterns.

Ooh yeah that one took me a bit IIRC.

There's a decent amount of down time. Read a book, play a game during that time. Or just straight up have it on in the background.

It's also changeable!

I didn't do that quest until after. However, I did find a way to cheese that fight. I'm not proud of it.

Interesting. I've experienced this once or twice on my iPhone, but never the AppleTV.

The AppleTV is connected via Ethernet though.