Problems with eye tracking, they turn as if the pupil or the central point of the eyes were the sclera

[Lola_SM]

I have an avatar fbx model which I want to implement so that it gives you facial movements, the problem I have is that it does not track the eyes correctly, when I started the project in unity the eyes rotate on their own axis to the right and then they move depending on where you see but the pupil is inside, that makes only the sclera of the avatar's eyes visible, does anyone know how I can solve that?