4 Player FFA: Game Analysis

Hi Guys,
Can we post some interesting games here for analysis (just for fun). Here is a game I played as Red:
https://www.chess.com/variants/4-player-chess/game/55182105

1. It started out like a typical 4-Player FFA game, Red and Yellow ganging up on Blue and Green.

2. Blue resigns leaving Yellow with points advantage and Red with material advantage. It means Red and Yellow finish first and second if they co-operate.

3. Yellow lines up his army against Red (Move 35) and attacks Red(Move 36)

4. Yellow wins the exchange (points) but complains about Green (probably expected a better Move from Green against Red)

5. Red remains stronger than both players in terms of material and abandons his attack on Green to focus on Yellow while allowing Green to grow stronger with two queens.

6. Green uses the advantage Red helped him to gain by attacking Red

7. Red continues to attack Yellow but actually waiting for a chance to pounce on Green.

8. Red launches an unstoppable attack on Green and Yellow capitalizes.

9. Yellow finishes first and Red second.

10. Both Yellow and Green are furious with Red. Yellow blocks Red.

What was Red supposed to do in this game?