How do Implement multilpayer matchmaking

How can I implement a multiplayer system with matchmaking and like multiplayer where its two people with controllers on the same controller

i saw some people say that theres some way to do it with firebase but that was old posts about p2p and i want to use THNK so i anyone knows how to please help

For matchmaking, there isn’t really a good way for now, although the THNK Cloud will eventually provide options for that.
For the other part of the question, I am kind of confused… two people playing with a single controller? How is that supposed to work?