My other dependents credit is only $86 because it says that is my tax liability, but I owe $2568, why is this caluclating like this?

I have 3 children, 2 are 17yo HS students, the third is a college student and 21yo. The AI is stating that although they all three qualify as other dependents, the credit was limited to $86 because that is the amount of my tax liability. However, my taxes owed are $2568.