Upon disconnection, and the game detects it, automatically pause the game and have an in-game timer countdown how long the disconnected player has to rejoin before the win automatically goes to the connected players (provided no other person is on the team of the disconnected player) if on a team of other players let it simply be a period of time where the player may still reconnect before the game boots the player’s ID as a resignation.
I suggest up to 5 minutes, which is more than enough time.
And upon the player rejoining, ensure everyone is able to select an “I’m ready” selection to ensure no one is afk.
If all players choose to skip, including teammates, that is an option to add as well provided the opponent is given at least 2 minutes to reconnect.
Successful Reconnection attempts limited to 2-5 times per game if the player completely disconnects - this does not apply to short disconnects where the player never really has the game crash or disconnect for under a minute
This has the possibility of abuse, so refinement prior to release is necessary.