For Mac players, Psyonix recommends - but does not officially support - using Apple’s Boot Camp tool to simulate a Windows computer.
Once the update hits Rocket League in March, the game will only be playable while running on a Windows 7 machine or newer.
As a result, the final patch for the macOS and Linux versions of the game will be in March.” In an announcement posted to Steam, Psyonix said, “As we continue to upgrade Rocket League with new technologies, it is no longer viable for us to maintain support for the macOS and Linux (SteamOS) platforms. For players on those platforms, Psyonix will launch a final patch in March to disable all online features - including matchmaking. Rocket League developer Psyonix announced on Thursday that its cars-playing-soccer game will no longer support Mac and Linux players as of March 2020.