Unlock The Forest creative mode (Ps4)?

I just defeated the final boss and you can choose 2 ways to end the game. I chose the second option (Emergency Shutdown) and can now continue to play normally. The problem is that I don't have the creative mode even though I defeated the boss, can someone help me?

I did it that way, I saved it in the end and sacrificed the plane = unlocked creative mode. And then loaded the last save status and made the other end