I cut the cord long ago, so my Baseball has come through Fanduel/Bally sports streaming in the past. I went through the maze on MLB.com the first or second day it was available and signed up. It has worked on my Samsung phone perfectly through the MLB app, and my TV as well.
On my Samsung 65" 4K TV (2024 Vintage), I simply searched for the MLB app, found and installed it on the TV . I logged into the app on my tv, and scanned the displayed QR Code and activated the app. That was it, It found the DSN subscription and has worked perfectly ever since. The picture quality is fantastic, and it looks like a 4K signal, although I'm not totally sure. The pricing is identical to my last year's Fanduel subscription.
Between over the air, streaming, and Samsung TV which come through my internet connection on the TV, I am just shy of 500 channels plus the streaming. Life is good.