Please help me with the startegy as this Ocampa civilization, especially against this Chiton civilization (in 3.0)

I have just played a game as this Ocampa civilization and I lost because of this Chiton civilization achieving a prestige victory. I would like to ask you if you have any strategy advice, including on settings, that would help me avoid this in the future, as I will be starting a new game as the Ocampa tomorrow.

I have a little problem with winning any game since 3.0 came out.