There should be multiple ways to locate The Roku Channel:
You can set your "Source" to "TV" (default) if you'd like, but it's totally optional ↓ Press the "Mic" button→ say "Open The Roku Channel" or "Open Roku Channel"→It'll open within a few seconds "Home"→scroll to the right of "Home" until you find it "Home"→"Search"→input "Roku" "Home"→"Apps"→"Search"→input "Roku" "Home"→"Apps"→"Settings"→scroll until you find it
With the other methods (excluding the voice command one), The Roku Channel app should come up & there should be a dark circle with the download symbol in it to show that it's installed. If it's not on Roku's tile, it's not installed, so you can install it. If it's already installed, select its tile to launch. For the voice command method, as it's opening & loading, the name & logo should appear on-screen until it's fully loaded & ready to use.
If you still can't find it, then you definitely will need to contact Samsung support or use an external Roku streaming device.
I really hope this helps! If it does, please consider giving a heart & marking this as a solution, thanks! Take care 👋🙂
