I’m relatively new to phoenix, so I may not have the vocabulary to express myself clearly.
I ended up maintaining as a junior a phoenix application with different channels that each have subtopics.
Some new requirements came in and I opted to do that inside of a LiveView.
I would like to receive updates from a specific channel inside the LiveView, change the assigns and update some content that way.

defmodule MyApp.RoleBillboardLive do
  use Phoenix.LiveView
  import MyApp.{UserSocket, Endpoint}
  alias MyApp.Endpoint
  alias Phoenix.Socket.Broadcast
  def render(assigns) do
    ~H"""
    Message from server: <%= @param %>
    """
  end

  def mount(_params, _, socket) do
    topic = "global:test"
    MyApp.Endpoint.subscribe(topic)
    IO.puts("I am now subscribed to " <> topic)
    param = "This is a test,"
    {:ok, assign(socket, :param, param)}
  end

  #def handle_info(_, socket) do
  #  IO.puts("info")
  #  {:noreply, assign(socket, assign(socket, :yeet, "yote"))}
  #end

  @impl true
  def handle_info(msg, socket) do
    IO.inspect(msg)
    {:noreply, assign(socket, :param, msg)}
  end
end

When I run this code, the mount function is called, I can see it clearly in the terminal.
(I run the command iex -S mix phx.server)
The page loads as expected with the initial content,
but when i publish a message on the topic, handle_info is never even called

I tried to skim through the docs, and a few forum posts, but none of them seemed to be advising on what I’m trying to do.