Hi, I could help depending on what you want to do.
This is one customer peer to peer multiplayer game I have completed a few days ago for a customer:
https://einsoph5.itch.io/kirifuda-blitz
It's for 2 players, so if you want to test it, you will need to open another browser page with the same address or use a different device.
I have sent you a friend request on Discord.
Thanks