Since the game has no built-in online servers, "playing online" actually means using a PC to host a local session and "inviting" others to control the second, third, or fourth player slots via the internet.
Because Just Bring It isn’t a graphically demanding title by modern standards, it runs beautifully on handheld PC devices like the Steam Deck. You can take your online matches on the go, connecting to hotel Wi-Fi or a hotspot to wrestle a quick match during a lunch break. wwf smackdown just bring it play online