How should I modify the face texture of (Black Myth Wukong)?

[791054681a]

I unzipped the game file and saved it as a PNG--p1
I don't know why I can't open the base color map，
But in Fmodel, you can see that I took a screenshot and cropped it to 2048*2048--p2
Enter UE5, divide and package--p3
But, after entering the game, Ohhhh... --p4 --p5

I'm a beginner at Fmold, can anyone tell me what I should do?

[hypersonic190]

How did you migrate the assests to a png format?