Casting from either Macbook or iPhone to TV

[thenoob]

I have jellyfin set up on my macbook air.
I have jellyfin set up on my iphone via both the jellyfin app, and the swiftfin app.
I have jellyfin set up on my TV via Apple TV 4K box with INFUSE and Swiftfin.

I really don't like the INFUSE app navigation. No list mode makes it difficult to see full titles of files etc, I'm not a huge fan of thumbnails.  I also have about 50,000 video files...

So what I REALLY want to be able to do is use the CAST function either within my web browser on my macbook, or in the jellyfin app on my iphone.

1.  On my macbook, the CAST button only shows one option which is my macbook named "My Device" so that's entirely pointless.
2.  On my ihpne, the CAST button shows both "My Device" which in this case is the phone, and also "Chrome - Jellyfin Web" which is my Macbook.  I can succesfully use my iphone therefore as a remote control to play things on my laptop.

But...

why do neither options show my a way to CAST to my INFUSE or Switfin apps on my apple tv box???

Plex does cast to my TV but so many other issues I don't wanna use it.

I REALLY WANNA BROWSE VIA MY LAPTOP, CLICK A VID, AND SEE IT PLAY ON MY TV.  OMG WHY SO DIFFICULT.

Thanks!

[thenoob]

what is the point of this forum?