I'm creating a chess-like webgame, I've done the code using html, css, js in VSCode. But what I'm stuck on now is the multiplayer, like a player playing with another player with another PC where you enter a game using the 6 digit generated code.

I tried GitHub pages, it's good for local multiplayer but I can't do online multiplayer with it. Is firebase a good platform to do so? Or is there any better one ?