There will be future avatars because she didn’t die, but the past avatars spirits just did.
Korra entered the Avatar State while she was performing an airbending attack against Kuvira's giant mecha suit in order to make it fall down. The avatar state is available only to the avatar and activates during times of great stress or danger although with training it can be controled at will. Maybe there already is a thread about this, but I lately saw "The Legend of Korra" after I rewatched "Avatar: The Last Airbender". Avatar Korra is the title lead character in Nickelodeon's animated television series The Legend of Korra (a sequel to Avatar: The Last Airbender), in which she is depicted as the current incarnation of Raava's Avatar – the spiritual embodiment of balance and resistance to change – responsible for maintaining peace and harmony in the world. Korra entered the Avatar State to win an air scooter race against Tenzin's children, though Tenzin admonished her for abusing her power. She is the immediate reincarnation of Avatar Aang (title character … No.
Korra entered the Avatar State while encountering a dark spirit in the Southern Water Tribe. Korra entered the Avatar State again while using energybending to restore Lin Beifong's earthbending abilities. 171 AG . First Point: It must be noted that the majority of Aang’s entrances into the AS where involuntary, and as such, he had no control over the power output. A large amount of Korra’s were voluntary — and she likely used what was needed. Korra entered the Avatar State during her second attack against the giant mecha suit, in order to increase …
In the first series it is explained that the AVATAR STATE connects the current Avatar to his pasts lives giving him the combined power of all Avatars before.
Korra entered the Avatar State in order to scare Baatar Jr. into exposing the secrets behind Kuvira's spirit energy cannon, though she exited after he called her bluff. Korra is poisoned and trapped, but keeps fighting to stay out of the avatar state; knowing that she is vulnerable in the avatar state (point 1), and knowing her time is shorter if she taps into that power (point 2), she also isn't confident enough in her current state to break out even in the avatar state (point 3).
Yes, she has lost the connection to all past avatars, and all future avatars will not be able to connect with the past avatars. She sees that her only course of action is to fight it for as long as possible in the hopes of being rescued or … Kindof.