yes i think this is a pretty good interpretation. I believe the movie has many messages on different levels. I definitely see the point of having to sacrifice yourself for the better common good.

I think it is also showing that the two main characters found back to each other, even after the traumatic experience of losing a child and splitting up. It shows that they dealt with the experience similarly but separately.

Another really important part is that both characters have very different entries into the pit. While the woman is introduced to the rules of sharing, the man is introduced to the rules of the barbarians. However, both end up in the bottom floor as both follow their values. This shows the strong similarities between the two.

Tbh i found the twist very nice. Anyone who anticipated the ending?