When Eta carinae dies, will it become a black hole?

From a Quick read, it has enough mass to become one. If it will, idk.

i know that it has enough mass, but i would like to know if it is the only argument of becoming a black hole

That much mass packed into a region is almost guaranteed to produce a black hole. In fact the only thing preventing huge masses like that from just straight up becoming a black hole is the fusion of lighter elements into heavier one at their core releasing tremendous energy, balancing the collapse with expansion. But when the hydrogen runs out (has all been converted to helium), it will collapse a great deal, until its is hot enough to fuse helium, but the fusion of helium will produce less outward pressure, soon the helium will all be gone, and it will start to fuse lithium, and so on until it starts to fuse iron, which is the final blow to a star, as the fusion of iron releases less energy that was consumed to fuse the iron, at which point the star will almost immediately turn into a black hole as the gravitational collapse will be unstoppable. Normally during this process huge amounts of mass are ejected and if enough is ejected, there won't be enough left to create the black hole; but that system is so massive, it's hard to imagine it losing enough mass to prevent the creation of a black hole.