Racing KIngs: how do I defend against aggressive white?

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Derpedero

New to this and I'm a noob at chess anyway. Got utterly destroyed here: https://www.chess.com/variants/racing-kings/game/25177738

What could I have done in this game to

-get ahead after opening move Nxc2?

-defend/prevent Bxa1?

Grantpogi

Me too i loosed couple times in racing kings.