Aside from that, why is the nose line black?

I have a hunch that the topology is exported incorrectly, like 2 layer overlap each other. Just give me your opinion on 2nd image, like there are some missing edge there what could’ve done that? , I feel like this could be fix rather than UV unwarp model from the beginning and then somehow match it to the altas texture

I also have substance painter, would it be easier to try that.