[2021] Huh? My internet is bad so I get disconnected from a game. Bad internet is cheating ? 😂

Try following these steps:

Verify your game files

Verifying your game files checks and fixes. If any files are missing or corrupted, running this method would reinstall and override the error.

Launch steam

From the Library section, right-click on the game and select Properties from the menu.

Select the Local files tab and click the Verify integrity of game files... button.

Steam will verify the game's files - this process may take several minutes.